Did you have it connected to a USB port from the TV for power? During an update ,sometimes there's not enough power provided to the device when connected to the tv through USB , therefore it crashes during update . This will probably brick your device , which causes the device to get stuck at the start up logo. Unfortunately , there's currently no fix for it. Try plugging into the original power brick an hope it loads .Many have reported this issue and amazon is only offering a discount towards the purchase of another unit. Sorry, I know this isn't much of a fix or repair suggestion

hi Tomiixd, I would like to help you and I'm pretty sure others would want to as well but..... We need a bit of more information to give you some pointers or advice. Type of computer....dell, toshiba, asus, etc... Custom built? specs, etc... All these may play a factor. Did it start all of the sudden? Did it start after you built it? or when did it start doing this? Did you do any recent updates? What windows version is running on your machine? When you say that you tested, how did you test it? Any information you give would be extremely helpful to be able to provide some feedback or advise.. Thanks! Luis

hi, when you say it doesn't work; -it doesn't turn? -it turns but no scrolling action of the screen? -

This usually requires a method to bypass the FRP lock, which we're not allowed to post here. in this case google will be your best friend.

Hi, I know you said you tried flashing the firmware already but just in case: -try using the sd card that came with the printer or different sd cards until you find the one that works (try using small capacity sd cards <1gb or less) -did you format the SD card as FAT32 ? -make sure you have the 4 proper files in the sd card (diy_icon, SYSTEM, .bin and .txt files specific to your machine) -usually nothing displays on the LCD during update, did you give it enough time?? 2-5 minutes -unplug power cord from the machine for a few minutes and try flashing again -Its usually a soft brick when using wrong firmware files , meaning you can recover from it. Just keep trying. Good luck

Sounds like a corrupted or wrong firmware . First you have do determine if your Ender came with the new 4.x.x boards( you have to take the cover off and you will see it printed on the board) which are now 32bit with a bootloader pre-installed . If it does , then you can use the SD card to flash the firmware. It may fail few times but eventually it will flash. Re-formatting, trying different SD cards and different storage sizes are few things you can try. However, if you have an original Ender with 1.x.x boards then the flashing process is bit more complicated because these boards are only 8 bit with no bootloader installed. If you search for Teaching tech, Thomas Sanladerer , or CHEP on YouTube. They have plenty of detail and step by step videos for the Ender 3 and the flashing process. Good luck.

Maybe you tried this already but it wont hurt to ask.. Did you try booting your computer with everything disconnected? nothing connected via USB just your monitor. If it boots then try connecting them one by one with a fresh boot after each one and see if any of them are causing this POST error.

10 pin seems to be or is going to be the new standard, also know as ATX12VO. You can is this ADAPTER specifically for IBM/Lenovo.

I had the same issue with my LG tv. I bought this CONVERTER from amazon and it works great! still cant play duck hunt on modern tv's though =(

aliexpress will probably be your best shot. I suggest you remove the LCD and look for the model number...its usually labeled in the back of the LCD. I did some research but its tough trying to find it without knowing the model of the LCD .