What happpened to computer?

I am working on a computer that worked fine one day but i noticed when i turned it on it was an hour behind in time. When I shut it off that night and turned it on next day the same time i turned computer off was shown when turned back on. When i last turned it off I went to turn it on the next day, and when i did the computer does not even come on. It seems like not getting power. I used a good power supply and also a switch that worked, neither solved the problem.

This question was answered on April 6, 2004. Much of the information contained herein may have changed since posting.

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The problem may lie in the CMOS battery You might need to replace the battery.

Its function is as follows:

On the motherboard, there is a chip called the CMOS configuration chip or CMOS setup chip This chip is responsible for remembering system information such as how memory is allocated and which hard drives and floppy drives are present, and I believe it also remembers the the time on the computer as it relates being the correct time when you boot up your PC.

The CMOS chip is powered by the a little battery called the CMOS battery which is located on the motherboard as well, usually close to the chip itself When that battery dies you will first noltice this by the inconsistency in the time, and eventually the computer will shut down and not power back on If the PC cannot detect if a hard drive is present or not then it will not boot up

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Posted by Student of Katharine Gibbs School - New York on April 6, 2004

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