Laptop only turns on without CMOS battery

Question

Asus TUF Gaming Laptop FX505D

ASUS TUF Gaming Laptop - FX505D-DBQ234T with i5-8750H and Nvidia gforce GTX. MFD-2019-05.

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Bihorn @melert1516

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投稿日: 2024年4月9日

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Laptop only turns on without CMOS battery

Hi,

Hoping everyone having a great day. My laptop won't turn on by pressing the power button, it only turns on when I remove the CMOS battery and plugged the charger cable, it turns on without even pressing the power button, is the CMOS battery causing it? As far as I know the CMOS battery only keeps the BIOS settings when the unit is off.

Thank you for answering my question your answers will help a lot.

Note:

I've tried to drain the residual power from my laptop and that doesn't work either

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Hi @melert1516,

Does it turn on when on the main battery only and not the charger?

jayeff さんによる2024年4月10日

Hi guys,

Thank you for your response.

Does it turn on when on the main battery only and not the charger?

No, it will not turn on and no any kind of indicator on the LED lights when I press the power button.

What is a CMOS reset/reboot?

I've tried it once and my unit is the same as before.

Note:

this is my first time asking a question on any forum, it means so much to me that you guys are responding to my question

Bihorn さんによる2024年4月10日

@melert1516

is there a battery installed in the laptop?

If so create a battery report to check the condition of the battery.

When you have the report compare the Design Capacity value versus the Full Charge Capacity value as shown by the report.

If there is no battery installed has it worked OK before on the charger only and for how long has it been used this way?

jayeff さんによる2024年4月11日

@jayeff

yes there is a battery installed, I'll to create a battery report

Bihorn さんによる2024年4月12日

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Hi @melert1516,

Does it turn on when on the main battery only and not the charger? — jayeff
Hi guys,

Thank you for your response.

Does it turn on when on the main battery only and not the charger?

No, it will not turn on and no any kind of indicator on the LED lights when I press the power button.

What is a CMOS reset/reboot?

I've tried it once and my unit is the same as before.

Note:

this is my first time asking a question on any forum, it means so much to me that you guys are responding to my question — Bihorn
@melert1516

is there a battery installed in the laptop?

If so create a battery report to check the condition of the battery.

When you have the report compare the Design Capacity value versus the Full Charge Capacity value as shown by the report.

If there is no battery installed has it worked OK before on the charger only and for how long has it been used this way? — jayeff
@jayeff

yes there is a battery installed, I'll to create a battery report — Bihorn

ArandomHitman @arandomhitman 評価: 1千 7 1 3 · Answer 1 · 2024-04-09T13:18:54-07:00

ArandomHitman @arandomhitman

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投稿日: 2024年4月9日

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Have you tried doing a CMOS reset/reboot?

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What is a CMOS reset/reboot?

Jri-creator さんによる2024年4月10日

Yes, but it doesn't solve the issue either :<

Bihorn さんによる2024年4月12日

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RipperDoc @inwerp 評価: 289 3 · Answer 2 · 2024-04-11T02:53:48-07:00

RipperDoc @inwerp

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投稿日: 2024年4月11日

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it seemy your power button is not working. It is normal for many laptops to autostart afetr power reset which you do by removing cmos battery. If the button is fine, then it might be actually a much worst issue with RTC section in PCH. I seen this problem caused by bad ME region, so it worth upgrading bios if possible.

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4 件のコメント:

Hi,

Thank you for your answer.

Sorry for being dumb, i don't know what is RTC, PCH or even the ME region.

but to answer your comment, I've tried to manually turn of my laptop using the power button and it does not work.

I noticed that when the both cmos and main battery the capslock indicator (LED) is on but the laptop is not even turned ON

Bihorn さんによる2024年4月12日

If laptop is on and you hold power button for 8+ seconds, does it go off?

RipperDoc さんによる2024年4月13日

I hold it for like a minute to be sure that my power button is either working or not

Bihorn さんによる2024年4月15日

well, that means power button is not working on your laptop at all. so basically it has autostart after no RTC power state.

RipperDoc さんによる2024年4月15日

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Asus TUF Gaming Laptop FX505D

Laptop only turns on without CMOS battery

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