"((PLEASE HELP)) No bootable device on acer nitro 7 AN715-51"の履歴

2021年10月6日

現在のバージョン作成者： mike

テキスト:

	By looking at your BIOS photos I can see your hard drives are visible. Do you know which one is the boot drive and have you tried both? If that does not help try:

	* *Performing a Start-up Repair:*
	The first thing you can try is booting into the recovery environment, if possible, and then performing a start-up repair. To access the recovery environment, turn your computer on and off three times. While booting, make sure you turn off the computer when you see the Windows logo. After the third time, Windows 10 will boot into diagnostics mode. Click ''Advanced options'' when the recovery screen appears.

	Click *''Troubleshoot''*.

	Click *''Advanced options''*.

	Then, click *''Start-up Repair''*.

	* *Fix Windows 10 Winload.exe Using the Command Prompt:*
	If you are unable to perform a start-up repair, then your next option is to try using your Windows 10 installation media to fix the boot error. If you don’t have installation media, you will need to go a working computer and Create a Windows 10 USB Bootable Flash Drive. You can also go to a working Windows 10 PC and create a recovery drive. When using a USB drive, make sure to set up your BIOS to boot from the USB drive.

	After booting into setup, choose the ''Repair Computer option > Troubleshoot > Advanced Options > Command Prompt''. If you are using a recovery drive, click ''Troubleshoot > Advanced Options > Command Prompt''.

	Once you have the command prompt up on screen, you will need to issue a set of commands to find and resolve issues that might be preventing your computer from booting.

	Type ''*BOOTREC /FIXMBR* ''and hit <*Enter*>.

	This command will attempt to fix any corruption issues with the master boot record. If all goes well, you should see ''The operation completed successfully.''

	Next, type *''BOOTREC /FIXBOOT''* then hit <*Enter*>.

	This command will attempt to write a new boot sector on the hard disk if Windows detects damage. Usually, this happens in cases where an older version of Windows was installed, or a non-compatible operating system such as Linux was installed.

	If you are seeing an error such as ''Boot Manager is Missing'', then the *''BOOTREC /RebuildBcd''* command might be able to fix it. This operation can also restore boot entries for older versions of Windows if you have a dual boot configuration. If *''BOOTREC'' ''/RebuildBcd''* does not work, then Microsoft recommends you back up your BCD (Boot Configuration Data) store, then run the *''BOOTREC'' ''/RebuildBcd''* command again. Here is how you do it.

	Type each command then hit <Enter>:

	* *bcdedit /export C:\BCD_Backup*
	* *c:*
	* *cd boot*
	* *attrib bcd -s -h -r*
	* *ren c:\boot\bcd bcd.old*
	* *bootrec /RebuildBcd*
	Another option if you are dual booting with older versions of Windows such as Windows 7 is the *''BOOTREC'' ''/ScanOS''* command.

	The *ScanOS* command can find and restore entries for older versions of Windows.

	=== What if None of These Options Work? ===
	Your next best option is to try salvaging your data and then reinstalling Windows 10 and your applications. If you have your Windows 10 install media, you can boot from it, then perform a *++Custom Install++. This will create an archive of the old installation called ''Windows.old''. You can then recover your personal files from this folder. Make sure you perform a custom install* that migrates your *Windows.old* data. Otherwise, all your data will be erased.

	If you don’t want to risk overwriting your data by reinstalling Windows, check out this article on How to Recover Data from a Hard Drive that Won’t Boot.

	https://www.groovypost.com/howto/recover-data-non-booting-hard-drive/

	Let us know how it goes or any questions you may have.

	You have two hard drives HDD0 and HDD2:

	HDD0 - SK Hynix 256GB m.2 SSD (Solid State Drive)

	HDD2 - Toshiba MQ04ABF100 1TB hard drive

	If you look at the “Information” screen in your BIOS, or your third photo, you will see them listed.

	I would think that HDD0 (SK Hynix 256GB m.2 SSD) is you boot drive as it would be the fastest and smallest one. Try that.

	Just noticed your BIOS is version 1.02 - the newest is v1.22 so ''VERY''* out of date and many performance things will have been fixed in 20 (!!!) revisions.

	https://www.acer.com/ac/en/IN/content/su...

	Note that v1.22 mentions:

	"Fix 2nd hdd information not shown in bios menu."

	So there is your solution.

-	Do you know how to update BIOS?
+	Do you know how to update BIOS? Good to reset after flashing.

+	This video shows how to get to the CMOS battery (at around 1:55). ''For others always remember to unplug charger before opening case.''

+	https://www.youtube.com/watch?v=gdMs4Fck3fw
+
+	Disconnect this to return settings to factory default. Small disc with black and red wires. Gently slide off the connector and discharge with power button. Reassemble and power up to BIOS and fix settings. I bet drives show up in Boot screen now.

	=== ===

ステータス:

open

2021年10月6日

編集者： mike

テキスト:

	By looking at your BIOS photos I can see your hard drives are visible. Do you know which one is the boot drive and have you tried both? If that does not help try:

	* *Performing a Start-up Repair:*
	The first thing you can try is booting into the recovery environment, if possible, and then performing a start-up repair. To access the recovery environment, turn your computer on and off three times. While booting, make sure you turn off the computer when you see the Windows logo. After the third time, Windows 10 will boot into diagnostics mode. Click ''Advanced options'' when the recovery screen appears.

	Click *''Troubleshoot''*.

	Click *''Advanced options''*.

	Then, click *''Start-up Repair''*.

	* *Fix Windows 10 Winload.exe Using the Command Prompt:*
	If you are unable to perform a start-up repair, then your next option is to try using your Windows 10 installation media to fix the boot error. If you don’t have installation media, you will need to go a working computer and Create a Windows 10 USB Bootable Flash Drive. You can also go to a working Windows 10 PC and create a recovery drive. When using a USB drive, make sure to set up your BIOS to boot from the USB drive.

	After booting into setup, choose the ''Repair Computer option > Troubleshoot > Advanced Options > Command Prompt''. If you are using a recovery drive, click ''Troubleshoot > Advanced Options > Command Prompt''.

	Once you have the command prompt up on screen, you will need to issue a set of commands to find and resolve issues that might be preventing your computer from booting.

	Type ''*BOOTREC /FIXMBR* ''and hit <*Enter*>.

	This command will attempt to fix any corruption issues with the master boot record. If all goes well, you should see ''The operation completed successfully.''

	Next, type *''BOOTREC /FIXBOOT''* then hit <*Enter*>.

	This command will attempt to write a new boot sector on the hard disk if Windows detects damage. Usually, this happens in cases where an older version of Windows was installed, or a non-compatible operating system such as Linux was installed.

	If you are seeing an error such as ''Boot Manager is Missing'', then the *''BOOTREC /RebuildBcd''* command might be able to fix it. This operation can also restore boot entries for older versions of Windows if you have a dual boot configuration. If *''BOOTREC'' ''/RebuildBcd''* does not work, then Microsoft recommends you back up your BCD (Boot Configuration Data) store, then run the *''BOOTREC'' ''/RebuildBcd''* command again. Here is how you do it.

	Type each command then hit <Enter>:

	* *bcdedit /export C:\BCD_Backup*
	* *c:*
	* *cd boot*
	* *attrib bcd -s -h -r*
	* *ren c:\boot\bcd bcd.old*
	* *bootrec /RebuildBcd*
	Another option if you are dual booting with older versions of Windows such as Windows 7 is the *''BOOTREC'' ''/ScanOS''* command.

	The *ScanOS* command can find and restore entries for older versions of Windows.

	=== What if None of These Options Work? ===
	Your next best option is to try salvaging your data and then reinstalling Windows 10 and your applications. If you have your Windows 10 install media, you can boot from it, then perform a *++Custom Install++. This will create an archive of the old installation called ''Windows.old''. You can then recover your personal files from this folder. Make sure you perform a custom install* that migrates your *Windows.old* data. Otherwise, all your data will be erased.

	If you don’t want to risk overwriting your data by reinstalling Windows, check out this article on How to Recover Data from a Hard Drive that Won’t Boot.

	https://www.groovypost.com/howto/recover-data-non-booting-hard-drive/

	Let us know how it goes or any questions you may have.

	You have two hard drives HDD0 and HDD2:

	HDD0 - SK Hynix 256GB m.2 SSD (Solid State Drive)

	HDD2 - Toshiba MQ04ABF100 1TB hard drive

	If you look at the “Information” screen in your BIOS, or your third photo, you will see them listed.

	I would think that HDD0 (SK Hynix 256GB m.2 SSD) is you boot drive as it would be the fastest and smallest one. Try that.

-	Just noticed your BIOS is version 1.02 - the newest is v1.22 so ''VERY''* out of date.
+	Just noticed your BIOS is version 1.02 - the newest is v1.22 so ''VERY''* out of date and many performance things will have been fixed in 20 (!!!) revisions.

	https://www.acer.com/ac/en/IN/content/su...

	Note that v1.22 mentions:

	"Fix 2nd hdd information not shown in bios menu."

	So there is your solution.

+	Do you know how to update BIOS?
+
+
+
	=== ===

ステータス:

open

2021年10月6日

編集者： mike

テキスト:

	By looking at your BIOS photos I can see your hard drives are visible. Do you know which one is the boot drive and have you tried both? If that does not help try:

	* *Performing a Start-up Repair:*
	The first thing you can try is booting into the recovery environment, if possible, and then performing a start-up repair. To access the recovery environment, turn your computer on and off three times. While booting, make sure you turn off the computer when you see the Windows logo. After the third time, Windows 10 will boot into diagnostics mode. Click ''Advanced options'' when the recovery screen appears.

	Click *''Troubleshoot''*.

	Click *''Advanced options''*.

	Then, click *''Start-up Repair''*.

	* *Fix Windows 10 Winload.exe Using the Command Prompt:*
	If you are unable to perform a start-up repair, then your next option is to try using your Windows 10 installation media to fix the boot error. If you don’t have installation media, you will need to go a working computer and Create a Windows 10 USB Bootable Flash Drive. You can also go to a working Windows 10 PC and create a recovery drive. When using a USB drive, make sure to set up your BIOS to boot from the USB drive.

	After booting into setup, choose the ''Repair Computer option > Troubleshoot > Advanced Options > Command Prompt''. If you are using a recovery drive, click ''Troubleshoot > Advanced Options > Command Prompt''.

	Once you have the command prompt up on screen, you will need to issue a set of commands to find and resolve issues that might be preventing your computer from booting.

	Type ''*BOOTREC /FIXMBR* ''and hit <*Enter*>.

	This command will attempt to fix any corruption issues with the master boot record. If all goes well, you should see ''The operation completed successfully.''

	Next, type *''BOOTREC /FIXBOOT''* then hit <*Enter*>.

	This command will attempt to write a new boot sector on the hard disk if Windows detects damage. Usually, this happens in cases where an older version of Windows was installed, or a non-compatible operating system such as Linux was installed.

	If you are seeing an error such as ''Boot Manager is Missing'', then the *''BOOTREC /RebuildBcd''* command might be able to fix it. This operation can also restore boot entries for older versions of Windows if you have a dual boot configuration. If *''BOOTREC'' ''/RebuildBcd''* does not work, then Microsoft recommends you back up your BCD (Boot Configuration Data) store, then run the *''BOOTREC'' ''/RebuildBcd''* command again. Here is how you do it.

	Type each command then hit <Enter>:

	* *bcdedit /export C:\BCD_Backup*
	* *c:*
	* *cd boot*
	* *attrib bcd -s -h -r*
	* *ren c:\boot\bcd bcd.old*
	* *bootrec /RebuildBcd*
	Another option if you are dual booting with older versions of Windows such as Windows 7 is the *''BOOTREC'' ''/ScanOS''* command.

	The *ScanOS* command can find and restore entries for older versions of Windows.

	=== What if None of These Options Work? ===
	Your next best option is to try salvaging your data and then reinstalling Windows 10 and your applications. If you have your Windows 10 install media, you can boot from it, then perform a *++Custom Install++. This will create an archive of the old installation called ''Windows.old''. You can then recover your personal files from this folder. Make sure you perform a custom install* that migrates your *Windows.old* data. Otherwise, all your data will be erased.

	If you don’t want to risk overwriting your data by reinstalling Windows, check out this article on How to Recover Data from a Hard Drive that Won’t Boot.

	https://www.groovypost.com/howto/recover-data-non-booting-hard-drive/

	Let us know how it goes or any questions you may have.

	You have two hard drives HDD0 and HDD2:

	HDD0 - SK Hynix 256GB m.2 SSD (Solid State Drive)

	HDD2 - Toshiba MQ04ABF100 1TB hard drive

	If you look at the “Information” screen in your BIOS, or your third photo, you will see them listed.

	I would think that HDD0 (SK Hynix 256GB m.2 SSD) is you boot drive as it would be the fastest and smallest one. Try that.

+	Just noticed your BIOS is version 1.02 - the newest is v1.22 so ''VERY''* out of date.

+	https://www.acer.com/ac/en/IN/content/su...
+
+	Note that v1.22 mentions:
+
+	"Fix 2nd hdd information not shown in bios menu."
+
+	So there is your solution.

	=== ===

ステータス:

open

2021年10月6日

編集者： mike

テキスト:

	By looking at your BIOS photos I can see your hard drives are visible. Do you know which one is the boot drive and have you tried both? If that does not help try:

	* *Performing a Start-up Repair:*
	The first thing you can try is booting into the recovery environment, if possible, and then performing a start-up repair. To access the recovery environment, turn your computer on and off three times. While booting, make sure you turn off the computer when you see the Windows logo. After the third time, Windows 10 will boot into diagnostics mode. Click ''Advanced options'' when the recovery screen appears.

	Click *''Troubleshoot''*.

	Click *''Advanced options''*.

	Then, click *''Start-up Repair''*.

	* *Fix Windows 10 Winload.exe Using the Command Prompt:*
	If you are unable to perform a start-up repair, then your next option is to try using your Windows 10 installation media to fix the boot error. If you don’t have installation media, you will need to go a working computer and Create a Windows 10 USB Bootable Flash Drive. You can also go to a working Windows 10 PC and create a recovery drive. When using a USB drive, make sure to set up your BIOS to boot from the USB drive.

	After booting into setup, choose the ''Repair Computer option > Troubleshoot > Advanced Options > Command Prompt''. If you are using a recovery drive, click ''Troubleshoot > Advanced Options > Command Prompt''.

	Once you have the command prompt up on screen, you will need to issue a set of commands to find and resolve issues that might be preventing your computer from booting.

	Type ''*BOOTREC /FIXMBR* ''and hit <*Enter*>.

	This command will attempt to fix any corruption issues with the master boot record. If all goes well, you should see ''The operation completed successfully.''

	Next, type *''BOOTREC /FIXBOOT''* then hit <*Enter*>.

	This command will attempt to write a new boot sector on the hard disk if Windows detects damage. Usually, this happens in cases where an older version of Windows was installed, or a non-compatible operating system such as Linux was installed.

	If you are seeing an error such as ''Boot Manager is Missing'', then the *''BOOTREC /RebuildBcd''* command might be able to fix it. This operation can also restore boot entries for older versions of Windows if you have a dual boot configuration. If *''BOOTREC'' ''/RebuildBcd''* does not work, then Microsoft recommends you back up your BCD (Boot Configuration Data) store, then run the *''BOOTREC'' ''/RebuildBcd''* command again. Here is how you do it.

	Type each command then hit <Enter>:

	* *bcdedit /export C:\BCD_Backup*
	* *c:*
	* *cd boot*
	* *attrib bcd -s -h -r*
	* *ren c:\boot\bcd bcd.old*
	* *bootrec /RebuildBcd*
	Another option if you are dual booting with older versions of Windows such as Windows 7 is the *''BOOTREC'' ''/ScanOS''* command.

	The *ScanOS* command can find and restore entries for older versions of Windows.

	=== What if None of These Options Work? ===
	Your next best option is to try salvaging your data and then reinstalling Windows 10 and your applications. If you have your Windows 10 install media, you can boot from it, then perform a *++Custom Install++. This will create an archive of the old installation called ''Windows.old''. You can then recover your personal files from this folder. Make sure you perform a custom install* that migrates your *Windows.old* data. Otherwise, all your data will be erased.

	If you don’t want to risk overwriting your data by reinstalling Windows, check out this article on How to Recover Data from a Hard Drive that Won’t Boot.

	https://www.groovypost.com/howto/recover-data-non-booting-hard-drive/

	Let us know how it goes or any questions you may have.

	You have two hard drives HDD0 and HDD2:

	HDD0 - SK Hynix 256GB m.2 SSD (Solid State Drive)

	HDD2 - Toshiba MQ04ABF100 1TB hard drive

	If you look at the “Information” screen in your BIOS, or your third photo, you will see them listed.

-	I would think that HDD0 (SK Hynix 256GB m.2 SSD) is you boot drive as it would be the fastest and smallest one.
+	I would think that HDD0 (SK Hynix 256GB m.2 SSD) is you boot drive as it would be the fastest and smallest one. Try that.
+
+

	=== ===

ステータス:

open

2021年10月6日

編集者： mike

テキスト:

	By looking at your BIOS photos I can see your hard drives are visible. Do you know which one is the boot drive and have you tried both? If that does not help try:

	* *Performing a Start-up Repair:*
	The first thing you can try is booting into the recovery environment, if possible, and then performing a start-up repair. To access the recovery environment, turn your computer on and off three times. While booting, make sure you turn off the computer when you see the Windows logo. After the third time, Windows 10 will boot into diagnostics mode. Click ''Advanced options'' when the recovery screen appears.

	Click *''Troubleshoot''*.

	Click *''Advanced options''*.

	Then, click *''Start-up Repair''*.

	* *Fix Windows 10 Winload.exe Using the Command Prompt:*
	If you are unable to perform a start-up repair, then your next option is to try using your Windows 10 installation media to fix the boot error. If you don’t have installation media, you will need to go a working computer and Create a Windows 10 USB Bootable Flash Drive. You can also go to a working Windows 10 PC and create a recovery drive. When using a USB drive, make sure to set up your BIOS to boot from the USB drive.

	After booting into setup, choose the ''Repair Computer option > Troubleshoot > Advanced Options > Command Prompt''. If you are using a recovery drive, click ''Troubleshoot > Advanced Options > Command Prompt''.

	Once you have the command prompt up on screen, you will need to issue a set of commands to find and resolve issues that might be preventing your computer from booting.

	Type ''*BOOTREC /FIXMBR* ''and hit <*Enter*>.

	This command will attempt to fix any corruption issues with the master boot record. If all goes well, you should see ''The operation completed successfully.''

	Next, type *''BOOTREC /FIXBOOT''* then hit <*Enter*>.

	This command will attempt to write a new boot sector on the hard disk if Windows detects damage. Usually, this happens in cases where an older version of Windows was installed, or a non-compatible operating system such as Linux was installed.

	If you are seeing an error such as ''Boot Manager is Missing'', then the *''BOOTREC /RebuildBcd''* command might be able to fix it. This operation can also restore boot entries for older versions of Windows if you have a dual boot configuration. If *''BOOTREC'' ''/RebuildBcd''* does not work, then Microsoft recommends you back up your BCD (Boot Configuration Data) store, then run the *''BOOTREC'' ''/RebuildBcd''* command again. Here is how you do it.

	Type each command then hit <Enter>:

	* *bcdedit /export C:\BCD_Backup*
	* *c:*
	* *cd boot*
	* *attrib bcd -s -h -r*
	* *ren c:\boot\bcd bcd.old*
	* *bootrec /RebuildBcd*
	Another option if you are dual booting with older versions of Windows such as Windows 7 is the *''BOOTREC'' ''/ScanOS''* command.

	The *ScanOS* command can find and restore entries for older versions of Windows.

	=== What if None of These Options Work? ===
	Your next best option is to try salvaging your data and then reinstalling Windows 10 and your applications. If you have your Windows 10 install media, you can boot from it, then perform a *++Custom Install++. This will create an archive of the old installation called ''Windows.old''. You can then recover your personal files from this folder. Make sure you perform a custom install* that migrates your *Windows.old* data. Otherwise, all your data will be erased.

	If you don’t want to risk overwriting your data by reinstalling Windows, check out this article on How to Recover Data from a Hard Drive that Won’t Boot.

	https://www.groovypost.com/howto/recover-data-non-booting-hard-drive/

	Let us know how it goes or any questions you may have.

	You have two hard drives HDD0 and HDD2:

	HDD0 - SK Hynix 256GB m.2 SSD (Solid State Drive)

	HDD2 - Toshiba MQ04ABF100 1TB hard drive

	If you look at the “Information” screen in your BIOS, or your third photo, you will see them listed.

-	I would think that HDD0 is you boot drive as it would be the fastest and smallest one.
-
-
+	I would think that HDD0 (SK Hynix 256GB m.2 SSD) is you boot drive as it would be the fastest and smallest one.

	=== ===

ステータス:

open

2021年10月6日

編集者： mike

テキスト:

	By looking at your BIOS photos I can see your hard drives are visible. Do you know which one is the boot drive and have you tried both? If that does not help try:

	* *Performing a Start-up Repair:*
-
	The first thing you can try is booting into the recovery environment, if possible, and then performing a start-up repair. To access the recovery environment, turn your computer on and off three times. While booting, make sure you turn off the computer when you see the Windows logo. After the third time, Windows 10 will boot into diagnostics mode. Click ''Advanced options'' when the recovery screen appears.

	Click *''Troubleshoot''*.

	Click *''Advanced options''*.

	Then, click *''Start-up Repair''*.

	* *Fix Windows 10 Winload.exe Using the Command Prompt:*
-
	If you are unable to perform a start-up repair, then your next option is to try using your Windows 10 installation media to fix the boot error. If you don’t have installation media, you will need to go a working computer and Create a Windows 10 USB Bootable Flash Drive. You can also go to a working Windows 10 PC and create a recovery drive. When using a USB drive, make sure to set up your BIOS to boot from the USB drive.

	After booting into setup, choose the ''Repair Computer option > Troubleshoot > Advanced Options > Command Prompt''. If you are using a recovery drive, click ''Troubleshoot > Advanced Options > Command Prompt''.

	Once you have the command prompt up on screen, you will need to issue a set of commands to find and resolve issues that might be preventing your computer from booting.

	Type ''*BOOTREC /FIXMBR* ''and hit <*Enter*>.

	This command will attempt to fix any corruption issues with the master boot record. If all goes well, you should see ''The operation completed successfully.''

	Next, type *''BOOTREC /FIXBOOT''* then hit <*Enter*>.

	This command will attempt to write a new boot sector on the hard disk if Windows detects damage. Usually, this happens in cases where an older version of Windows was installed, or a non-compatible operating system such as Linux was installed.

	If you are seeing an error such as ''Boot Manager is Missing'', then the *''BOOTREC /RebuildBcd''* command might be able to fix it. This operation can also restore boot entries for older versions of Windows if you have a dual boot configuration. If *''BOOTREC'' ''/RebuildBcd''* does not work, then Microsoft recommends you back up your BCD (Boot Configuration Data) store, then run the *''BOOTREC'' ''/RebuildBcd''* command again. Here is how you do it.

	Type each command then hit <Enter>:

	* *bcdedit /export C:\BCD_Backup*
	* *c:*
	* *cd boot*
	* *attrib bcd -s -h -r*
	* *ren c:\boot\bcd bcd.old*
	* *bootrec /RebuildBcd*
-
	Another option if you are dual booting with older versions of Windows such as Windows 7 is the *''BOOTREC'' ''/ScanOS''* command.

	The *ScanOS* command can find and restore entries for older versions of Windows.

	=== What if None of These Options Work? ===
-
	Your next best option is to try salvaging your data and then reinstalling Windows 10 and your applications. If you have your Windows 10 install media, you can boot from it, then perform a *++Custom Install++. This will create an archive of the old installation called ''Windows.old''. You can then recover your personal files from this folder. Make sure you perform a custom install* that migrates your *Windows.old* data. Otherwise, all your data will be erased.

	If you don’t want to risk overwriting your data by reinstalling Windows, check out this article on How to Recover Data from a Hard Drive that Won’t Boot.

	https://www.groovypost.com/howto/recover-data-non-booting-hard-drive/

	Let us know how it goes or any questions you may have.

+	You have two hard drives HDD0 and HDD2:
+
+	HDD0 - SK Hynix 256GB m.2 SSD (Solid State Drive)
+
+	HDD2 - Toshiba MQ04ABF100 1TB hard drive
+
+	If you look at the “Information” screen in your BIOS, or your third photo, you will see them listed.
+
+	I would think that HDD0 is you boot drive as it would be the fastest and smallest one.
+
+
+
	=== ===

ステータス:

open

2021年10月5日

オリジナル投稿者： mike

テキスト:

By looking at your BIOS photos I can see your hard drives are visible. Do you know which one is the boot drive and have you tried both? If that does not help try:

* ***Performing a Start-up Repair:***

The first thing you can try is booting into the recovery environment, if possible, and then performing a start-up repair. To access the recovery environment, turn your computer on and off three times. While booting, make sure you turn off the computer when you see the Windows logo. After the third time, Windows 10 will boot into diagnostics mode. Click ''Advanced options'' when the recovery screen appears.

Click ***''Troubleshoot''***.

Click ***''Advanced options''***.

Then, click ***''Start-up Repair''***.

* ***Fix Windows 10 Winload.exe Using the Command Prompt:***

If you are unable to perform a start-up repair, then your next option is to try using your Windows 10 installation media to fix the boot error. If you don’t have installation media, you will need to go a working computer and Create a Windows 10 USB Bootable Flash Drive. You can also go to a working Windows 10 PC and create a recovery drive. When using a USB drive, make sure to set up your BIOS to boot from the USB drive.

After booting into setup, choose the ''Repair Computer option > Troubleshoot > Advanced Options > Command Prompt''. If you are using a recovery drive, click ''Troubleshoot > Advanced Options > Command Prompt''.

Once you have the command prompt up on screen, you will need to issue a set of commands to find and resolve issues that might be preventing your computer from booting.

Type ''***BOOTREC /FIXMBR*** ''and hit <***Enter***>.

This command will attempt to fix any corruption issues with the master boot record. If all goes well, you should see ''The operation completed successfully.''

Next, type ***''BOOTREC /FIXBOOT''*** then hit <***Enter***>.

This command will attempt to write a new boot sector on the hard disk if Windows detects damage. Usually, this happens in cases where an older version of Windows was installed, or a non-compatible operating system such as Linux was installed.

If you are seeing an error such as ''Boot Manager is Missing'', then the ***''BOOTREC /RebuildBcd''*** command might be able to fix it. This operation can also restore boot entries for older versions of Windows if you have a dual boot configuration. If ***''BOOTREC'' ''/RebuildBcd''*** does not work, then Microsoft recommends you back up your BCD (Boot Configuration Data) store, then run the ***''BOOTREC'' ''/RebuildBcd''*** command again. Here is how you do it.

Type each command then hit <Enter>:

* ***bcdedit /export C:\BCD_Backup***
* ***c:***
* ***cd boot***
* ***attrib bcd -s -h -r***
* ***ren c:\boot\bcd bcd.old***
* ***bootrec /RebuildBcd***

Another option if you are dual booting with older versions of Windows such as Windows 7 is the ***''BOOTREC'' ''/ScanOS''*** command.

The ***ScanOS*** command can find and restore entries for older versions of Windows.

=== What if None of These Options Work? ===

Your next best option is to try salvaging your data and then reinstalling Windows 10 and your applications. If you have your Windows 10 install media, you can boot from it, then perform a ***++Custom Install++***. This will create an archive of the old installation called ***''Windows.old''***. You can then recover your personal files from this folder. ***Make sure you perform a custom install*** that migrates your ***Windows.old*** data. Otherwise, all your data will be erased.

If you don’t want to risk overwriting your data by reinstalling Windows, check out this article on How to Recover Data from a Hard Drive that Won’t Boot.

https://www.groovypost.com/howto/recover-data-non-booting-hard-drive/

Let us know how it goes or any questions you may have.

=== ===

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