Black screen after update - BIOS damaged

[akapuma]

Hello,

Yesterday Windows updated to 24H2. This probably destroyed the BIOS. When starting up, the LED on the power button and the backlight of the screen switch on. The fan runs slightly. But the screen remains dark. I have tried the following:

WIN+V
"The CMOS checksum is invalid. - CMOS RESET (502)"
Then the laptop starts with the same problem as before.

WIN+B:
A recovery starts, the bar runs to the end. Then a message appears:
"A System BIOS Recovery has occurred - BIOS Recovery (500)"

The laptop then starts with the same problem as before.

USB BIOS recovery stick created:
I have tried it with 2 different USB sticks and with both USB ports. The LED on the USB stick lights up but does not flash. The screen remains black, nothing else happens.

What else can I do?

Best regards

akapuma

[Irfan_06]

Hi @akapuma,

Welcome to the HP Support Community.

Thank you for posting your query, I will be glad to assist you.

I understand you're experiencing an issue with your Laptop that is not booting up.

I apologize for any inconvenience this may have caused, I'm here to help you today.

Please follow the steps below to perform an extensive system test to confirm if the hardware is working fine.

1) Shut down the computer.

2) Turn the computer back on again and repeatedly tap on the ESC until a Startup menu appears.  

3) Press F2 once.  

4) Go to the system test > extensive test

If the hardware is working fine. Kindly refer to the steps on this link to perform system restore on your laptop and let me know if that resolves the issue.

If the issue still persists, click on this link to perform a recovery on your Laptop.  (Take a backup of the data before performing a recovery)

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

I hope this helps.

Take care and have a great day ahead!

 Irwin6

HP Support