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Powers up, but nothing starts


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#1
Dreylivude

Dreylivude

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Hello all. I cleaned out my desktop today, using compressed air, cleaned all the fans from the dust and such, but now she won't turn on. I don't know if I knocked something loose or what. I opened it back up and had a look at all the cables, double checked all the peripherals, but it won't turn on. It'll power up, but nothing appears on screen, no matter how long I wait.

Please, help a poor hardware newbie, what did I do? And how can I fix it?

Thanks.
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#2
Troy

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What do you mean by power up? What exactly does that entail? Try giving us as many details as possible as to what happens.
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#3
Dreylivude

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Ok, well when I press the power button on it powers up. The Power LED lights up, and the HDD LED lights up, I can hear the fans start, and my cd and dvd drives blink, all like they should, but then nothing continues after that, no signal goes to the screen so it doesn't even come out of sleep, I don't hear window's start up through the speakers, and my optical mouse doesn't even get power. The power and HDD led's stay on, unblinking, and that's all. It just stays like that. SO I have to hold in the power button to shut it down.

I hope that's detailed enough. Oh, and there are no beeps at all.
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#4
The Skeptic

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Try the following steps. Test the computer after each step.

Pull out the power cable from the back of the computer, wait few seconds and plug in.

Open the box, disconnect the large connector that plugs the psu to the motherboard and plug it back. Don't push too hard but make sure it sits in place. Make sure that all the leads that go into this plug are in place and that none is halfway or all the way out.

Take out the video card (if it's an add-on one) clean carefully the contacts on the card and the slot in the motherboard and place it carefully but firmly back.

Do the same with the memory modules.
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