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Originally Posted by i1t4yomindi
i just wanted to ask how does replacing the battery help the computer boot?
i am not sure if i will perform this task, my friend told me to replace the mobo battery a few monthes ago when my clock lagged by about 15 minutes.
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Did you replace the battery?
The battery is required to maintain power to the CMOS/BIOS chip when you switch your machine off. The CMOS chip contains BIOS information (Basic Input Output System) this information is the most basic information your computer uses to start your machine up, it knows what hardware you have and runs tests (POST power on self test) to check all the hardware is there and functioning and also where to look for your operating system. It is very easy for the BIOS information to become corrupted, thats why I originally asked you if you had noticed any flickering in the lights, if this information gets corrupted in anyway it is possible that your computer will become confused as to where to find things and either "hang" (waiting for information) or crash. Resetting the BIOS via the motherboard jumper or removal of the battery for half an hour, automatically resets the BIOS information back to the original default settings and hopefully your machine will then have the correct information in order to boot itself.