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BIOS battery in the PC, switch - how it works

  • Oct 08, 2025
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Are you constantly the settings in the BIOS or set the time back, you have to change probably the BIOS battery. For this, you need handles just some of the hand.

The BIOS battery on the motherboard replacing

The BIOS battery is somewhere installed on your motherboard. To do this, you have to open your Computer.
  1. You remove any power connection to your Computer.
  2. Ground yourself by touching a radiator or the like. Screw you then, your PC.
  3. You have the manual for your motherboard, find out the location of the BIOS battery. Otherwise, you need to search for a button cell, which looks like a large watch battery.
  4. You have found the battery, detach it from the motherboard.
  5. Then, put the new BIOS battery. This can, for example, in the Internet or in a computer dealer to buy. The exact type designation please refer directly to the button cell. Usually the battery with the "CR" plus a four-digit number is named.
  6. To screw your Computer again and connect it to the power cable. Now the settings of the BIOS and time again.
BIOS battery on the motherboard
Your BIOS before Changes to protect, you can also use a BIOS password.

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