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‎03-17-2023 08:57 AM

HP Recommended
Product: 15-da1017tx
Operating System: Microsoft Windows 11

CMOS Reset (502)

I replaced it with a new battery and upgrade to SSD PCie Gen3 M.2 512GB

Unable to boot when not connected to the power plug. Display message CMOS Reset (502)

When connected to the power plug, the laptop runs well.

Category:
1 REPLY 1

‎03-17-2023 09:08 AM

HP Recommended

It is a best practice when performing upgrades to a PC or laptop to only do one at a time.

 

Reset the embedded controller as described in the HP document at the link below. That may jog the firmware into action.

https://support.hp.com/in-en/document/c02693833

The CMOS Reset (502) error means that the BIOS is corrupt.

With the power adapter connected try restoring the BIOS  will effectively reset the CMOS.



I am a volunteer forum member, not an HP employee. If my suggestion solved your issue, don't forget to mark that post as the accepted solution. If you want to say thanks, click on the Yes button next to the "was this reply helpful?"



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