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‎10-17-2025 06:51 AM

HP Recommended

i have Hp Omen 15 dh0138tx, which came with windows 10 installed 3 to 4 years ago. i have recently upgraded it to windows 11. I want to update my BIOS but when i check HP site it only shows me BIOS for Windows 10 Operating System. 

How should i upgrade?

 

Also i am having issues to turn on my PC as its not starting and giving me CMOS Checksum Error 502. Note: There is no separate BIOS battery in the PC. Also tried replacing primary battery but it didn't work.  PLEASE HELP! 

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1 REPLY 1

‎10-17-2025 07:08 AM

HP Recommended

Please see this related discussion.

 

Of course you would have to use the BIOS update from your notebook's support page instead.

 

Solved: BIOS update is for Windows 10. My operating system is Window... - HP Support Community - 951...

 

Can't help you with the CMOS error since you have already done everything I would have recommended.

 

Maybe the BIOS update will fix the problem?

 

If not, I suspect you have a faulty CMOS chip on the motherboard which would require a system board replacement.

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