computer shuts down

E machine / W3052
January 9, 2010 at 10:41:24
Specs: Windows Vista
My computer shuts down at the exact same time every morning and an awefully sound comes frome it( like a warning sound). You have to cut the power from the computer to get the sound to stop. while the computer is in this "shutdown" mode, it will not reboot until you dissconnect the electrical power from it. We changed the computers time, and this shut down follows exactly 24 hours from the previous shut down. Virus? Power supply issue? any suggestions are welcome.

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January 9, 2010 at 22:05:48
It could be a power issue, but probably from outside of your computer. If there is something on the circuit (or possibly in the same building) turning on at that exact time, you may be getting a power fluctuation that is setting it off. A heater or central air conditioner on a timed thermostat, a Neon sign on an old fashion mechanical timer, Medical equipment, etc could be the cause of a power surge or a power drop out (lower voltage temporarily) and a surge protector might not be enough. It doesn't even have to be a big draw item if it's switch is partially shorting as it goes on. If you can confirm something on that timing, or if you can try a different circuit (or different building) and can confirm that it is external, then I would recommend purchasing a UPS (Uninteruptable Power Supply) since it can protect against momentary fluctuations both up and down in voltage as well as give you a number of minutes to shut down if there is a power failure, thereby saving many problems. I like APC's units, home and at work.

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