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CMOS loses power - faulty battery?


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#1
tomdrayson

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Hi, one of my computers has recently been experiening problems with the CMOS. I think it is losing power when the computer is off.
After it has been off overnight and I turn it on, I get 3 quick beeps from the motherboard, and a message saying that the CMOS has been reset - I have 2 options, to configure the settings again (F1), or to continue with the defaults (F2), and the system clock loses time as well. Does this mean that the battery is dying? If so, where can I get new CMOS batteries? The motherboard is only about a year old (ASRock).

Thanks
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#2
emery

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It is most likely that your CMOS battery has faded away and now your BIOS settings have been lost. The BIOS settings will keep resetting every time power is lost or the computer is unplugged because there is no way to save the information (which is done with the aid of a CMOS battery).


HERE is a webshop that sells CMOS batteries. There are other stores that sell them, this is just one google came up with.
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#3
Kemasa

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The CMOS battery tends to be a common battery, most stores carry them in the camera dept or other location for small batteries.
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#4
tomdrayson

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Ok, thanks people!
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