CMOS 502

[alewe]

HI, my battery was swollen and put away, after i have CMOS 502 error, i replaced Bios battery, but nobody was changed, pleaze help me.

[ub6424 · Accepted solution]

Sorry to hear that you are having problems ... and I would like to help you.

(1) Update BIOS

HP Notebook System BIOS Update (Intel Processors)

F.56 Rev.A

19.0 MB

Dec 18, 2020

Download

Why should you install the update ?

https://support.hp.com/us-en/document/ish_4123786-2338478-16

Quote: "

Updating the BIOS is recommended as standard maintenance of the computer. It can also help resolve the following issues:

• An available BIOS update resolves a specific issue or improves computer performance.
• The current BIOS does not support a hardware component or a Windows upgrade.
• HP Support recommends installing a specific BIOS update.

"

(2) Install/Update

HP Consumer Desktop / Notebook PC ME Firmware Update

2020.2.1220 Rev.A

33.6 MB

Jan 6, 2021

Download

(3) Check CMOS CR2032 3V (Voltage) Battery again on the mainboard

(4) Reboot and test again ...

[alewe]

hello the problem was in the tracks on the motherboard, but bios update give me stability

Thank You!

[ub6424]

It was a great pleasure to help you 

best regards