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Dell Dimension C521 power shuts off spontaneously

While working on my computer, power spontaneously shuts off without warning. I then have to reboot. Compter will operate for 5-10 minutes, and then suddenly shut down again

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It sounds like your power supply fan may be overheating. The easiest way to determine this is to open the case and look at the fan while it is spinning- if it is indeed spinning at all. I find the best way to get an idea of the functionality of the fan is to shine a flashlight on it at an angle. If you can detect fluctuations in the rpm visually, you know where the problem is. Then it's a matter of changing out the power supply. If, however, the fan seems to keep the same rotation speed constantly, we'll need to look further. Let me know what you find out before we go deeper into the system.

Posted on Feb 23, 2009

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Procssor over heat can cause this kind of problem
check your processor cooler

Posted on Feb 23, 2009

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Hello,

If the fan on your power supply is not turning then you need to replace the power supply as soon as possible. The machine is overheating and then shutting off. If the power supply is not replaced it can cause additional problems with the motherboard, cpu, and hard drive. Open your case and look on the power supply for your replacement parts number, check Ebay.com for a replacement. They are easy to replace, just a few screws and power plugs.

I hope this helps, if so please rate my solution.

Buddy
Corporate Computer
www.ccl-la.com
Over 21 years of PC and printer support/repair

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Reboot


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Here is a Dell Document on how to restore your system for factory defaults:

http://support.dell.com/support/topics/global.aspx/support/dsn/en/document?c=us&dl=false&l=en&s=gen&docid=3E48AE3870775D64E040A68F5B2877D4&doclang=en&cs=


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