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HP Recommended
HP ENVY x360 Laptop - 15m-ed0013dx
Microsoft Windows 11

I have CMOS reset (502) error on the laptop.

How can I fix it? 
Do I replace the battery(CMOS)?

1 REPLY 1
HP Recommended

Your notebook does not have a CMOS/RTC battery.

 

The main battery also serves as the CMOS/RTC battery.


You may have to install a new battery if the error persists.

 

I recommend testing the battery.

 

HP Notebook PCs - Testing and calibrating the battery (Windows) | HP® Support

 

Below is the link to the service manual:

 

Maintenance and Service Guide HP ENVY x360 15 Convertible PCIMPORTANT! This document is intended for...

 

Chapter 3 has the battery part number and description, and chapter 5 has the battery removal and replacement procedure.

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