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‎07-31-2021 01:31 PM - last edited on ‎08-02-2021 10:23 AM by Retired

HP Recommended
Product: Notebook 15 da0014dx
Operating System: Microsoft Windows 10 (64-bit)

It all started when the original battery gave up soul. The machine then gave me a CMOS RESET 502 error every time I started. At first I thought the CMOS battery was the problem, except I couldn't find it on the Motherboard. After I tested my main battery and it was really bad so I changed it for a new battery that works very well. Except that every time it completely discharge or the machine is turned off for more than 10 minutes, I get the CMOS Rest 502 error on startup. And that's not all, the machine refuses to turn on if it is not plugged in, regardless of the level of the battery. I have to connect the power supply if only for a few seconds before it turns on. And then I can unplug without problem until I turn off the machine again or the machine is discharged. I updated the BIOS, restored the default settings, calibrated the battery, without success, I tried everything on the forums here and elsewhere without success. My warranty has already expired and I cannot go to a repair center, what should I do? 

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