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Tower not coming on

I shut down my tower and then disconnect all cords to clean and when hooked eveything back tower will not power up. Dont know if i actually there is somethign wrong? Had this problem befor when i lost power and unplugged everything and let set and then it worked later. Is there something internal that has to wait like a reset button?

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  • scott1211966 Jan 04, 2009

    when you push the power button ,there is no light that comes on or anything

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Check the power supply, if you don't hear any whir at all from the fan, power supply needs to be replaced.

Posted on Jan 04, 2009

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Hi.
Before you go and get a new motherboard, first let's try to do a hard reset.

Sometimes, hp and Compaq computers bios will lock up, causing this condition.

To do the hard reset, first make sure all the cords are connected to the points where they belong.

Now, unplug your ethernet cable, and your power cord.

This stops all power from coming into the machine.

Next, press and hold the power button in for 30 to 45 seconds.

This causes the capacitors on the motherboard, and the ones in the power supply to dissipate, and returns them to a ready state.

After doing that, reconnect just the power cord and attempt to power on the computer.
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If it does boot up, then you can reconnect the ethernet cable back, otherwise there is no sense of hooking it back up as you would be replacing the motherboard anyways.

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  • connect with the power cord only
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It seems the video card is not supporting the game's video requirement

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There is a green blinking LED on my motherboard, and my computer is not turning on. What is wrong? Someone told me to ... Hi, i have a dell Optiplex 780 running windows xp, the computer button is just...


Hi,
If you are referring to the green light on the system tower and is blinking the problem could be the system is in stand by mode.

Turn off the computer by pressing on the power button on the system tower for 10 seconds.

Disconnect the black power cord at the back of the system tower and then again press the power button on the tower for 10 seconds. There would be no activity on the tower when you do this.

Reconnect the power cord and then power on the computer to see if the issue is resolved.


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Hi there.
The reason you can smell burning plastic and why its shutting down after a short time is because its overheating. This can be caused by a build up of dust on the CPU fan, overtime with dust build up computers struggle to keep themselves cool and tend to shut down unexpectedly, chances are this is the problem with your machine, my advice would be to remove the power cord, open the side panel of the computer and clean all the dust away from inside the tower, do this with a soft, clean paintbrush making sure you remove the dust carefully and gently, also make sure the CPU fan and the heat sync behind it is completely free of dust or any other foreign objects.
Once you are happy that its clear of dust, close or return the side panel, plug in the power cord and turn the PC on, you may find that the PC will stay on for longer with the smell dramatically reduced.

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