Try pressing the power button for approx. 5 sec and see if the power LED turns off. If so,remove all cables including the power cable, monitor cable,keyboard and mouse).
Press power button for approx 15 sec again to discharge any excess power.
Reconnect the cables (power cable last) at the back of the tower/computer and power on the system.
Also, try removing and re-seating all ram modules
If the problem persists it's probably the power supply. If you know how to remove a power supply they are pretty easy to test There are some videos on youtube that show the proper way (view a few of them
Basically you can jump( use a bent paper clip), the green wire to the black one beside it or to the left if they're on both sides, BUT!!YOU MUST HAVE SOMETHING ATTACHED TO THE SUPPLY THAT WILL POWER UP!! An old fan, hdd, something.
Hope this helps you...good luck
Sorry guess your PCs motherboard is out....if FAN on power unit at the back works(the FAN that's close by to the power socket)
if that FAN does not work when you switch on then the power unit is out.....
take it to tech shop and have a tech examin it
SOURCE: my pc light flashes green
need to know the model # and type of computer? Remove all external devices except mouse, keyboard and monitor. If not getting any power at all, could be your power supply.
SOURCE: Flashing Green light on back and tower won't come on.
Yes, you should try replacing the power supply first. If that doesn't work, then it could be a bad motherboard.
SOURCE: Flashing Green Power Light on Tower
Try holding down the power for a full minute or two then start it up again. The power button may be set for sleep and not shut down. You may have to hold the button longer. If that doesn't work it could be RAM, or a serious problem with the motherboard.
SOURCE: green light blinking on back of my system unit but there is no power
I had turned off the power strip to my computer last night...just trying to reduce energy use after reading about home energy waste with little built-in lights. This morning, I had the "flashing green light" problem when I turned things back on... and tried the dryer method. It worked! Does anyone know why this happens?
Thank you so much for this tip.
SOURCE: Tower won't turn on. There is a green light on the
Pull the power cord out and allow it to reset. If you still have issues you may need to replace your power supply.
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