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#4712650 - 03/31/18 07:20 PM
BIOS losing settings
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Registered: 11/14/08
Posts: 8504
Loc: Phoenix
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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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2015 Grand Cherokee 3.6 - M1 5w-30 Wix 10010
2017 124 Spider 1.4T - PP Euro 5w-40 Wix 57341
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#4712653 - 03/31/18 07:22 PM
Re: BIOS losing settings
[Re: dishdude]
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Registered: 06/15/03
Posts: 32379
Loc: ME
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#4712677 - 03/31/18 08:00 PM
Re: BIOS losing settings
[Re: dishdude]
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Registered: 01/09/09
Posts: 5883
Loc: New England
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Change the battery.
Are you hearing a series of beeps from the MB? That’s how my past MB’s have let me know
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#4712721 - 03/31/18 08:51 PM
Re: BIOS losing settings
[Re: dishdude]
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Registered: 11/14/08
Posts: 8504
Loc: Phoenix
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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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2015 Grand Cherokee 3.6 - M1 5w-30 Wix 10010
2017 124 Spider 1.4T - PP Euro 5w-40 Wix 57341
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#4712726 - 03/31/18 09:00 PM
Re: BIOS losing settings
[Re: dishdude]
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Registered: 01/09/09
Posts: 5883
Loc: New England
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Are you sure you don’t mean that you looked up the battery type? Never heard of a rechargeable CMOS battery.
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14 Forester XT Touring w/ Eyesight (her)
Castrol Edge 0W-40 + Fram Ultra (FU) filter
15 Legacy Premium w/ Eyesight (me)
Edge 0W-20 + Subie blue filter
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#4712729 - 03/31/18 09:06 PM
Re: BIOS losing settings
[Re: dishdude]
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Registered: 11/14/08
Posts: 8504
Loc: Phoenix
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Might be the battery type. ML1220 is what it's marked.
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2015 Grand Cherokee 3.6 - M1 5w-30 Wix 10010
2017 124 Spider 1.4T - PP Euro 5w-40 Wix 57341
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#4712730 - 03/31/18 09:07 PM
Re: BIOS losing settings
[Re: dishdude]
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Registered: 10/17/04
Posts: 2882
Loc: Midwest, Illinois
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CMOS battery should be a medium button type, maybe a CR3032, not the battery pack that runs the laptop.
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#4712732 - 03/31/18 09:14 PM
Re: BIOS losing settings
[Re: dishdude]
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Registered: 11/14/08
Posts: 8504
Loc: Phoenix
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 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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2015 Grand Cherokee 3.6 - M1 5w-30 Wix 10010
2017 124 Spider 1.4T - PP Euro 5w-40 Wix 57341
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#4712915 - 04/01/18 06:23 AM
Re: BIOS losing settings
[Re: dishdude]
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Registered: 04/28/15
Posts: 335
Loc: Reunion Island
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If the connector is different, cut the black heat shrink wrap and swap the cables on the tabs.
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