Question about Dell Dimension C521 PC Desktop

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It will not start even after I replaced the power

I have a Dell Demension C521. It will not start even after I replaced the power supply. Any Ideas??

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Before anything else, open your case and make sure all power and data cables going to motherboard, disk drives, etc are firmly seated, and remove and re-install memory sticks in the same locations. Sometimes temperature changes inside the PC can cause these connections to loosen. If that doesn't fix it, do you hear the noise of the cooling fans coming on? If you do, check your monitor for a green light. If you get a green light on the monitor and fans are powered up and running and you get nothing else it could be a hard drive issue. Try booting from CD in that case. If fans come on briefly and then shut off, or fans stay on and you have no green monitor light, this could indicate an issue with your processor or motherboard.

Posted on Jun 05, 2010

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Dell c521 won't start blinks amber


A possible power supply failure has occurred. The system has not received a Power Good signal from the power supply. In other words you either have a defective power supply or a device in the computer (i.e. sound or video card) is shorting out the power supply.

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You may want to refer to this link for step-by-step guide to replace power supply specifically for Dell C521 Dimension, which I got from Dell Support site.

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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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dont take any risk with power supply. purchase a new compatible power supply to solve your prob...
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This is most likely caused by a power supply failure. If you have or know someone who has another power supply you could use for testing thats where you'll want to start.

Hope this helps.
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- disconnect the hdd and optical drive cables, remove the expansion card, reseat the atx and 12v cable and turn the computer on. if the power led is glowing green connect the devices on by to find what device is causing the no post issue. after the strip down if the power button is still yellow replace the motherboard

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