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Computer doesn't switch on!

Hi, my advent computer will not switch on anymore... i've checked cables fuses etc and changed the power supply but this did not help, any assistance will be greatly appreciated! thanks

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  • Mthamane Apr 14, 2008

    * I've tried to clean my system board

    * i've also tried to remove it from the casing since I thought it had an electric shock but still it didn't work for me.

    * I then tried to change the power supply but still the computer continued to show a red light when trying to boot it. Note: the system board lights in green as normal but what is not normal is the way my processor is functioning. The processors fan doesn't spin anylonger and I suspect that it might be the one that is causing the problem.

  • julie31165 Jul 14, 2008

    my e-machine will not turn on, The power supply works because I tried it in another computer. Could it be disconnected wires to the switch or something?? Julie

  • Anonymous Aug 19, 2008

    On-off switch only works sometimes. When it doesn't work, flicking it several times finally makes it work.

  • rygilo Sep 01, 2008

    I have a problem with my Giant 550W power supply. It does not turn on anymore..but the LED in the motherboard still lights up indicating that the power is not dead..but it won't turn on anymore..i just buy it yesterday, i only use it for only an hour when it suddenly turn off and it won't turn on back again..pls help me..thanks..



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More than likely nothing to do with the motherboard.

I have the Thermaltake w0049. and for the money paid is poor quality.
This model and I would guess other models by Thermaltake go belly up if subjected to voltage spikes ie lightening strikes (they are not well protected)
Remove all the leads to your motherboard and join together the single green wire (power select) to any one of the adjacent black leads (ground).
Any atx supply, if connected to mains voltage will not operate at all unless if has some form of load on it. if you do the shunt as suggested(use a paper clip) the fans should spin and you should be able to measure the voltages between ground and the relevant pins.
If you can, plug in a hdd to one of the plugs to give it some kind of load. if you do not know which voltage pins are which on your 20/24 pin connector , then search google for "atx pinout"

Posted on Jan 14, 2008

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Check your front panel power on switch

Posted on Aug 21, 2012

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The monther boad has a short, replace it.

Posted on Dec 23, 2007

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Posted on Jan 02, 2017

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SOURCE: computer doesn't switch on!

The troubleshooting techniques you might try is swapping them out with another monitor and keyboard. If they work then you know its the monitor and keyboard if they don't work then the motherboard is bad. The ports for the keyboard and monitor are integrated into the motherboard. So you can't fix the ports, the whole motherboard has to be replaced.

Don't forget to rate this solution with 4 stars before you log out.

Posted on Jan 31, 2009

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Your unit is having a power fault because it is not switching on. The unit might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby not making it to power on.

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Computer doesn't switch on!

The troubleshooting techniques you might try is swapping them out with another monitor and keyboard. If they work then you know its the monitor and keyboard if they don't work then the motherboard is bad. The ports for the keyboard and monitor are integrated into the motherboard. So you can't fix the ports, the whole motherboard has to be replaced.

Don't forget to rate this solution with 4 stars before you log out.

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3. Press and hold the power button for 30 seconds
4. Put the power-cable back in but not the battery and none the USB devices.
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