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bucolic_frolic

(43,209 posts)
Sat Dec 18, 2021, 10:16 AM Dec 2021

Replace CMOS battery

When the lithium battery is replaced, it resets the BIOS? That's a potential nightmare. Is there a way to maintain power while replacing the battery? Such as a battery jumper while the old one is popped out and replaced? I'm sure you can't just leave the system running, it would be susceptible to surges and static.

Asking because this HP has been a bear. I replaced the mobo early on after a BIOS upgrade. I think they used 2 BIOS for the mobo which were differentiated by CPU level. I upgraded to the higher BIOS and it locked everything. Probably tossed a perfectly good mobo that would have accepted the higher speed CPU. I surely do not want to install BIOS updates again, but I need to replace the battery very soon.

Thanks

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Replace CMOS battery (Original Post) bucolic_frolic Dec 2021 OP
You tube may have some help. pwb Dec 2021 #1
I don't think it does canetoad Dec 2021 #2
Its easy LPBBEAR Feb 2022 #3
Thanks, yes I did replace it no hitches bucolic_frolic Feb 2022 #4

pwb

(11,280 posts)
1. You tube may have some help.
Sat Dec 18, 2021, 10:22 AM
Dec 2021

I changed my battery with help there. It was so bad it had bulged out from heat.

LPBBEAR

(296 posts)
3. Its easy
Sat Feb 5, 2022, 03:16 PM
Feb 2022

The battery is likely a CR 2032. It just pops out. The only trick is to make sure you don't pop the replacement in upside down. From your post it sounds like you've looked at your BIOS settings before. Before you install the new battery just go into the BIOS and take note of the settings. Recreate them after you install the new battery and before you let the system complete the startup of the operating system.

Thats all there is to it assuming your only issue is a weak battery.

bucolic_frolic

(43,209 posts)
4. Thanks, yes I did replace it no hitches
Sat Feb 5, 2022, 09:45 PM
Feb 2022

Didn't even enter the BIOS everything seems to work fine, just like before.

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