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- Hp PC Hardware Diagnostics UEFI and cmos 502 error

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09-19-2024 01:37 PM
I hope this message finds you well. I am reaching out for assistance with my HP All-in-One computer, which is currently experiencing a persistent issue.
My computer powers on but gets stuck on the "HP PC Hardware Diagnostics UEFI" screen. I have run all available diagnostics, and they indicate that all components are functioning properly. I have also updated the BIOS via USB, reset the BIOS settings, and replaced the CMOS battery, but I am still encountering the same problem.
When I manage to exit the diagnostics screen, I receive a CMOS 502 error. Following the prompt to press Enter, I am returned to the diagnostics screen once again. I have exhausted all troubleshooting steps I found online, and unfortunately, I cannot boot, reset, or access the computer beyond this screen.
If anyone has any additional solutions or suggestions, I would greatly appreciate your guidance. Thank you for your time and assistance.