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- DEAD cmos battery OMEN Laptop - 15-en0013dx

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01-06-2025 08:10 PM
I have a cmos 502 error, which is a dead cmos battery. I opened it up to replace the cmos battery and find out its soldered to the motherboard somewhere..... I saw on another forum I should send it in for repair at an HP service center thing. And I tried to fill out a ticket or something but its virtually impossible with their revolving door of a support system. How do I go about doing this..... thaannkss
01-06-2025 10:41 PM
The notebook does not have a CMOS battery.
The main battery also serves as the CMOS battery to maintain the BIOS and system clock settings.
Below is the link to the service manual.
Chapter 3 has the list of parts.
You will find no CMOS or RTC (Real Time Clock) battery part number.
Chapters 5 & 6 have the component removal and replacement procedures.
You will find no procedure to remove or replace a CMOS or RTC battery.