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- HP Community
- Desktops
- Desktop Operating Systems and Recovery
- CMOS Error 502

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11-08-2022 02:45 PM
Hello Community,
since last week, had a issue with my HP Pavilion Desktop PC. Without any warnings, the computer showed me the CMOS 502 checksum error message. I search in the Internet and do the recommended things mainly the change of the CMOS battery. I buy a new one 2032 and replaced. Than i try again, but the problem remains, i go to the BIOS load the default settings and set the time, all was fine. Than i put the power off until next day and start again, same error despite battery change.
I make a BIOS rollback installed the BIOS update, nothing helps. Have anyone a idea what i can try or where is the problem? Dont know what to do.
Best regards
11-08-2022 04:31 PM
Please use the following Guide to fix
https://support.hp.com/us-en/document/ish_4209641-3226345-16
Regards.
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11-09-2022 03:53 AM
Many thanks Banhien for your reply. As i mentioned above in my comment, i trythe recommended things from the site especially the BIOS reset. The only thing i didnt try, was the BIOS reset via USB, but i cannot imagine where is the difference to the Keyboard tactic. I try the BIOS rollback and Update, try the battery change no effect.