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#4712650 - 03/31/18 07:20 PM BIOS losing settings
dishdude Offline


Registered: 11/14/08
Posts: 8844
Loc: Phoenix
I'm working on an Acer B116 notebook that if it sits for awhile keeps losing the BIOS settings. It reverts back to UEFI, refuses to boot and the time goes back to 1/1/2014. Going into the BIOS and changing it to legacy boots it right up. I checked the CMOS battery and it's at 2.63v. but the label on it says 3.0v. Could this be my problem?
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2018 Challenger SRT

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#4712653 - 03/31/18 07:22 PM Re: BIOS losing settings [Re: dishdude]
eljefino Offline


Registered: 06/15/03
Posts: 32776
Loc: ME
yes

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#4712677 - 03/31/18 08:00 PM Re: BIOS losing settings [Re: dishdude]
gathermewool Offline


Registered: 01/09/09
Posts: 6064
Change the battery.

Are you hearing a series of beeps from the MB? Thatís how my past MBís have let me know

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#4712721 - 03/31/18 08:51 PM Re: BIOS losing settings [Re: dishdude]
dishdude Offline


Registered: 11/14/08
Posts: 8844
Loc: Phoenix
No beeps, ordered a new battery. I am a little puzzled - when I looked up the part number it's supposed to be rechargeable.
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#4712726 - 03/31/18 09:00 PM Re: BIOS losing settings [Re: dishdude]
gathermewool Offline


Registered: 01/09/09
Posts: 6064
Are you sure you donít mean that you looked up the battery type? Never heard of a rechargeable CMOS battery.

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#4712729 - 03/31/18 09:06 PM Re: BIOS losing settings [Re: dishdude]
dishdude Offline


Registered: 11/14/08
Posts: 8844
Loc: Phoenix
Might be the battery type. ML1220 is what it's marked.
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2018 Challenger SRT

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#4712730 - 03/31/18 09:07 PM Re: BIOS losing settings [Re: dishdude]
beanoil Offline


Registered: 10/17/04
Posts: 3007
Loc: Midwest, Illinois
CMOS battery should be a medium button type, maybe a CR3032, not the battery pack that runs the laptop.
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beanoil: Tough under heat, real dirty afterwards.

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#4712732 - 03/31/18 09:14 PM Re: BIOS losing settings [Re: dishdude]
dishdude Offline


Registered: 11/14/08
Posts: 8844
Loc: Phoenix


The connector looks the same on the one I bought, but it's tough to tell if it's the same size. This one is tiny.
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#4712915 - 04/01/18 06:23 AM Re: BIOS losing settings [Re: dishdude]
Superflan Offline


Registered: 04/28/15
Posts: 373
Loc: Reunion Island
If the connector is different, cut the black heat shrink wrap and swap the cables on the tabs.
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