]> 2026-05-26T16:59:21+02:00 TB450 - CMOS Battery replacement 0 en Published Changing the CMOS battery inside the P.C Easy 5 minute(s) Internal CMOS batteries are used in PCs to keep a constant power supply to BIOS memory while the main power supply is switched off. These batteries should last up to 5 years when a PC has been left idle. Sometimes these batteries can fall flat before this time either due to being low when sent out or extended use on older machines. The main symptom of a CMOS battery faulting on a Stuga machine is the PC not booting up when mains power is switched on which will be indicated by a “No Signal Detected” message being displayed on the screen. This is due to the BIOS setting “Restore AC Power Loss” going back to its default value of OFF due to the battery faulting. Restoring the BIOS to its original settings is a temporary fix in this situation as it is most likely this will happen again a couple of months down the line (See TB 376 or 213). The battery required is a '''CR2032'''. In the case of the Antec PC, and most commonly, the battery is held in an open housing that can be pushed to release and easily replaced. In PCs such as the Acer Revo the battery needs to be pre-wired with a plug but still easily unclipped and replaced false en TB450_-_CMOS_Battery_replacement_CMOS.jpg none Remove cover by taking out the circled screw. Then holding the tab, pull in the direct shown to unclip and remove the cover. On the Acer Revo P.C the Battery location is as shown The battery is held in an open housing that can be pushed to release. Newer Versions have battery in a different Place - Z073 - Put is not a Button type replacement it has soldered wires and Plug - we cannot replace Remove cover - (example shown on Antec PC New style) Battery Location Acer Revo P.C Battery Location CMOS change replace Battery BIOS Power 2024-08-14T14:05:18Z 2460537.0870139 TB450 - CMOS Battery replacement 1 false true 0 0 0 0 plainlist 1 [[:Item:Small Pozi Head Screwdriver]] TB450 - CMOS Battery replacement# QUERYfd9d9d134314620296604d929443abef 0 1 plainlist 3 [[:Dokit:DocOptions]] [[DokitEPIEnable::yes]] TB450 - CMOS Battery replacement# QUERYee7a61aae48f1c3f91d8e4d7736360be Newer Version 844 fr Newer Version Comment on 102 fr Comment on