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CPU doesn't turn on!!

I plug in the power cord and all that turns on is the green light in the back of the tower. All it does is blink! Is it the power supply?

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  • Anonymous Sep 23, 2008

    The CPU doesn't turn on and I don't even have a green light showing in the back. Any suggestions?

  • Anonymous Sep 23, 2008

    the CPU doesn't turn on and I don't have a green light on in the back, either. Any suggestions?

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  • 4,234 Answers

Most likely yes it is thepower supply. There are capacitors inside that can cause this when they fail. The easiest thing to do is to replace the supply. It can be fixed, but this is a specialized task and is rarely done. It will be less expensive for you to replace the supply.
Dan

Posted on Jun 21, 2008

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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.

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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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You might have a bad power supply, or something might have loosened inside the case. sometimes if the memory or processor get jarred , they might need to be reseated. unplug all the cables from the back of the tower, only leave the power cord in then try to power up. Sounds like it might be power supply or Maybee the motherboard. Have a computer tech check all the inside connections. Good luck..

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1. Disconnect all the connection at the back of your computer tower
2. Press the power button of the computer tower for 15 seconds
3. Reconnect the power button and the monitor cable at the back of your computer tower and turn on the computer (if it turned on that means that one of the device plugged at the back of your computer tower is faulty)
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If the only light you get is a green blinking light in the back of the computer, odds are that your power supply stopped funcitioning properly.

The good news is, it is a relatively easy part to get and install, but you will want to be sure you get one with adequate power for your system.

Additionally, some systems have custom built power supplies, and can be expensive. If you go buy one, be sure to take your old one in for comparison.

Good Luck
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