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First thing to look at is overheating issues, take off the side case so you can see inside. Get some air in a can, gasduster, compressed air whatever you want to call it, from your local office depot or equivalent. Clean all of your fans with the air can and don't miss the one on your video card if there is one! be sure the fins on the CPU heatsink are blown clean as well!

Believe it or not this will probably solve your problems. I have built my own systems for about 15 years and was stumped when my system was shutting down randomly and every time i did a virus scan too! I knew it wasnt the CPU fan or case fans cause i had cleaned them recently! After dealing with it for about a month I finnally broke down and decieded to get to the bottom of the problem and removed the video card to change it with another to see if that was the problem and when I looked into the fan on the video card it was VERY dirty, I blew the dust out with the canned air and reinstalled the card>I havent had the problem since!

If this didnt work it could also be caused by:

a) bad or overheating CPU

b) bad or unavailable sector in ram

c) bad or overheating motherboard

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Q: Computer shuts down by it self and then restars?
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What does short DST mean?

Short Drive Self Test - The quick version of a computer disk drive self test.


How much is a self rebuilt computer worth?

It widely depends on the hardware it has.


What does POST mean in information technology?

P.O.S.T. is the way it should read. Stands for "POWER ON SELF TEST" which is what the computer firmware does when it is turned on, checking for the correct settings for the computer hardware. POST stands for Power on Self Test


What things computer can not do without us?

Some would suggest - nothing. Including plug its self in.


What causes a computer to shut down and immediately restart itself when you are in the middle of something?

There is a problem with the operating system, or with data stored on the hard drive. If the machine is running Windows 98, right click on the icon for the hard drive, and open the 'Tools' menu. Select 'Error checking' and proceed. If the computer is running Windows XP, go to the control panel, select 'Maintenance' and look in the upper left corner for 'System Restore'. Point at that and click, and then select 'Restore system to an earlier time.' You will not lose any data, unless the hard drive is severely messed up. You should already have backed up everything important on the hard drive to a CD-ROM, or some other storage media. If this does not help, you need to have a technician check out the machine. Such a person can determine if the Central Processor Unit or the power supply have gotten so dirty that they are overheating, or if the software is corrupted.

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