Computer won't turn on!

June 29, 2009 at 09:05:07
Specs: Windows XP Home
I'm sorry, I'm not very good with computers, but I'll try my best. My Dell Optiplex SX270 won't turn on after I accidently unplugged it. When I contacted Dell they told me it was either the RAM, the motherboard, or the CPU. Before I go out and spend a bunch of money on any of these parts, I want to know what the problem is for sure. Thanks in advance.

EDIT 1: I'm pretty sure it's not the PSU because I tried out three different types on it and none of them worked (I actually have two SX270's, and a spare power supply).

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June 29, 2009 at 09:25:40
Don't start replacing parts without troubleshooting. What happens when you try to power up? No fans, no LED's, no POST beep...nothing?

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June 29, 2009 at 11:56:56
Absolutely nothing, but the motherboard light is on.

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June 29, 2009 at 19:46:45
It will probably end up being the motherboard, but that's no guarantee. If it was the ram--and everything else was OK--you'd be getting a ram beep error and you've pretty much eliminated the power supply as the problem.

But try this: disconnect all the drives and remove all the cards except video. Then see if you at least get a posting screen. If so then the problem is with one of the removed items.

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