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Old 07-15-2013, 02:03 PM   #1 (permalink)
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Default Computer turned off and won't turn back on

Hey guys, so I was just watching a video on youtube when suddenly my computer turns off, in fact everything being supplied by the power through the sockets in my house turns off, so I go to the main switch thing and flip the switch, power returns (wooh!), everything works except my computer. The monitor turns on and off though. I thought that the psu was the problem but I checked that and it works fine, when I look at the motherboard while the plug is on I can see a blinking green light on it (don't know if this mean anything).



To conclude my PC isn't working, my PSU is working and a blinking green light is present on the motherboard, any help will be appreciated thanks!!
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Old 07-15-2013, 02:08 PM   #2 (permalink)
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Default Re: Computer turned off and won't turn back on

Is this a custom-built machine? pre-built?
Did you have the computer plugged into a surge protector? or just into the wall outlet?
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Old 07-15-2013, 02:09 PM   #3 (permalink)
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Default Re: Computer turned off and won't turn back on

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Originally Posted by Yevrag35 View Post
Is this a custom-built machine? pre-built?
Did you have the computer plugged into a surge protector? or just into the wall outlet?
The computer is prebuild and it's just plugged into a wall outlet.
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Old 07-15-2013, 02:32 PM   #4 (permalink)
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Default Re: Computer turned off and won't turn back on

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The computer is prebuild and it's just plugged into a wall outlet.
Well, hopefully the outage didn't fry something. Unfortunately, it's a process of elimination to figure what component is the offender.

You can follow these steps, as they go well into detail: New build, stand-by LED on motherboard keeps blinking - Power Supplies - Components (look at the post from jb6684)
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Old 07-15-2013, 03:06 PM   #5 (permalink)
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Default Re: Computer turned off and won't turn back on

What is the make/model of the machine?
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Old 07-15-2013, 03:13 PM   #6 (permalink)
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Default Re: Computer turned off and won't turn back on

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What is the make/model of the machine?
It is a Acer M7720.
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Old 07-15-2013, 03:38 PM   #7 (permalink)
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Default Re: Computer turned off and won't turn back on

Unplug the power cord from your PSU; Open up the machine and find the CMOS jumper (if you have the manual look at chapter 5 and move the pins to reset the CMOS (look online if need be for the manual)

Leave it unplugged for about 5 minutes and then try again. Some mobos have a feature that (for lack of a better term) resets itself when there is a power spike. (Dell and HP are notorious for this) Not sure if Acer has this, but it's worth a shot.
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