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‎04-10-2021 04:45 AM

HP Recommended
Product: HP pavilion gaming 15
Operating System: Microsoft Windows 10 (64-bit)

The CMOS checksum error happen after i remove my laptop battery. As I only use my laptop as desktop at home, i tried to removed the battery and only startup my pc with AC power supply. But after that the pc happen to gone into auto repair loop until i solve it on google solutions. Now im able to start up but with a CMOS checksum error everytime i boot the pc, and it reset my BIOS setting all the time. How do i fix this?

1 person had the same question
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‎04-10-2021 11:52 AM

HP Recommended

@jerry5555 

Most laptops have CMOS batteries, but some of the newer ones do not and rely on the laptop battery to store the CMOS setting.  Since yours sounds like one of those, you have no choice other than to leave the battery in all the time.



I am a volunteer and I do not work for, nor represent, HP

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2 REPLIES 2

‎04-10-2021 11:52 AM

HP Recommended

@jerry5555 

Most laptops have CMOS batteries, but some of the newer ones do not and rely on the laptop battery to store the CMOS setting.  Since yours sounds like one of those, you have no choice other than to leave the battery in all the time.



I am a volunteer and I do not work for, nor represent, HP
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‎04-10-2021 12:10 PM

HP Recommended

Does it have other bad effect on the pc if the battery is out? IDM if its just the bios setting keep getting reset, because i had change my battery twice as it was overcharged until the battery is swollen. 

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