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I have a Dell Dimension 4550 that had a power surge hit it. The case fan would run at wild speeds but nothing else would work. The light on the motherboard would light up. I replaced the power supply and it fried the new supply. I have tried 3 power supply's and same result. I have checked the HD and it's fine.

Any ideas why this is happening?

Thanks!

Mike

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Last Post by Jupiter 2
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when a power surge hits a computer, most of the small, delicate circuits become fried. Your cpu is most likely gone, and maybe your motherboard. Use a surge protector if you can, and make sure to get one with phone line protection as surges can come trough the phone line. My advice would be to get a new cpu, ram, etc. Because the surge came through the psu everything delcate connected to it is most likely gone.

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when a surge blows a psu and you replace it with a working one and this one blows aswell then you know the system is damaged, this not good as this could mean a new pc(mainboard,cpu,ram) the best is to replace them all at once, ass you do not know which om them are at fault and might needs some more psu's

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Dell do not provide adequate Power supply units. I hope the PSU you replaced the faulty one with was 500 Watts. Anything less is inadequate.

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