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Old 02-18-2005, 01:21 AM   #1
imported_Scythe
Junior Member
 
Join Date: Feb 2005
Posts: 10
Default CMOS battery dying. What are the symptoms?

I've been trying to isolate a problem, and it's getting no where. Everything passes stess tests, mem checks, hard drive tests etc.

If the CMOS battery was going bad, what kind of symptoms **could** be occuring, in your experience? I guess I could just check it wtih a volt meter, but still curious.
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Old 02-18-2005, 03:14 AM   #2
imported_hobbes
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Join Date: Feb 2005
Posts: 2
Default CMOS battery dying. What are the symptoms?

I do not think that the cmos battery has any function other than being the backup supply for the bootup RAM. This stores all your boot preferences even when the computer power supply is off. In case it has gone bad, while booting you should get the prompt that boot defaults are being used...
The way to check it is to make changes in the boot setup and shutdown. If you see the changes next time you startup, the cell should be fine.

Please do correct me if I am wrong! :-)
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Old 02-18-2005, 05:21 AM   #3
Calin
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Join Date: Apr 2001
Posts: 3,113
Default CMOS battery dying. What are the symptoms?

Your computer will loose its time and date after prolonged (or less prolonged) storage (no power cord)
I think (with an ATX power supply) the CMOS is powered from the power supply if it is under tension (plugged in a socket)
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Old 02-18-2005, 06:00 AM   #4
jackschmittusa
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Default CMOS battery dying. What are the symptoms?

First symptom is usually a "checksum error" at bootup, prompting to "press F1 to continue" or "F2 to enter setup". Then you may notice the time, then date get behind.
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Old 02-18-2005, 07:52 AM   #5
LTC8K6
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Location: Under an American chemtrail
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Default CMOS battery dying. What are the symptoms?

A new one is only what, $1.98? Put a new one in and then you'll know.

An early symptom of a CMOS battery getting weak is a clock that runs fast.
__________________
no offense, but does he have some sort of mental dissability? -nick1985

Brainwashed, mentally unstable, and stupid Intel user, screwed by Intel and located directly under a chemtrail.

Don't be a moron! Buy AMD!
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