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Momentary switch won't turn on pc

Computer won't turn on with power supply connected to the psu have checked psu Psu checks out ok . No responce from momentary switch when pressed. Can you solve this problame for me please . Trevor.

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Open the computer and check the cable that comes from the power switch and goes to the front panel header on the motherboard. Make sure it is connected. If it is, you need to check if the switch is working. Two ways: check resistence at the end where it connects to the motherboard with it disconnected and turn switch on and off. If you don't have a ohm meter, you can also short the two pins that the power switch cable connects to. If it still doesn't power up, then it can be three things. The memory, or the cpu, or the motherboard. Swap each one at time until you determine what is causing the problem.

Posted on May 18, 2009

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Wont post.


Try a few things for me OK? From what you typed, turned on the psu "the toggle switch on the psu", pc seemed to be starting up. I need you to keep the toggle switch on the power supply in the on position. Press and hold the start button on the PC case to shut it down. Give it a few seconds & power up by pressing the power switch on the case. Notice a differance? Next, unplug everything connected to the pc expect the monitor, mouse & keyboard. Try to boot. Still no? Remove the side of the case exposing the board. Turn the psu off by flipping the toggle switch on the psu, wait till the green light on the board goes out. Grab the Mb ( I know it's tight in there) and see if you can move the board in any direction. Not loose? Re-check all data & power connections for a solid connect. Re-check your case to Mb connections. Also check the PSU, there is a red slide switch it should be set to 115v. Post your findings..
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