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Computer Won't Turn On

Yesterday I was out of the office and the power went down for about 90 minutes. I got back to the office today and now one of my computers will not turn on. It has some important information on it. It was plugged in and running when the power went down. All of the other computers have come back up.

This one and another were plugged into a battery backup/surge protector, but I doubt the backup lasted the entire 90 minutes.

I seem to remember having another computer at my home a few years ago and it also would not turn on after power outages, but that if I just sort of unplugged it and replugged it and did some combination of that it would turn back on.

Any ideas for me?

Thanks.
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Frylock
Asked:
Frylock
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3 Solutions
 
simpswrCommented:
What happens when you press the power button? . . Do you get fan noise and any lights?
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MescronomiconCommented:
Does the power supply react at all? Any fan movement? Any LEDs on the mobo lighting up if you pop the AC plug into it?
All things being equal the power supply is probably fried.
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FrylockAuthor Commented:
No fans, no lights, no nothing.

In addition to the power button on the front, there is also the power switch on the back (the power supply?) When I flip that after plugging it back in - if it's been off and unplugged for a while - it makes a little noise - or at least I think it does. A very faint sound.
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simpswrCommented:
The PowerSupply has almost surely failed . . can you try it with a new one?
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simpswrCommented:
The PowerSupply has almost surely failed . . can you try it with a new one?
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FrylockAuthor Commented:
I will have to find and install a new one.
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FrylockAuthor Commented:
BTW - why would it have failed? Is it common to fail? This computer is maybe two years old.
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moondistCommented:
Try holding the power button on the front fro 5-10 seconds. Sometimes that resets the soft switch. If still nothing I concur with the power supply diagnosis.
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simpswrCommented:
No telling . . may have been repeated power outages and power spikes or if just may have been its time to die
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moondistCommented:
Also make sure the outlet it is plugged into is powered. Perhaps a breaker popped.
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FrylockAuthor Commented:
Tried several outlets. Tried holding for 10-15 seconds. Getting new PS tomorrow and swapping it out (PITA!).
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simpswrCommented:
Yep . . bummer
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FrylockAuthor Commented:
Whell, it was a pain geting the powersupply outand it seems like a nice one. Thermaltake 680w. Not sure if Best Buy or Office Depo or whomever I can go to find one. I am in DC/Northern VA
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simpswrCommented:
CompUSA usuall has P/S . .
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nobusCommented:
before buying a new one, check what power you need here :  (though a 680 W unit seems fine for most systems)
http://extreme.outervision.com/psucalculator.jsp      
Sometimes the PS goes into protect mode during a situation like this; and some come back to life after several hours
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FrylockAuthor Commented:
So I got a new one and it works.

I went to Microcenter in Fairfax, VA. That is a pretty snazzy place. I've never been around such a nerdy sales staff in my life.

The clerk who helped me steered me to a modular (great!) Corsair that was 620w though he said it was actually under-labeled.

Was a pain in the ass installing (been years since I crawled inside a box - I use to build my own before my time was worth money) but now it is working flawlessly and I am typing at you from the actual machine.

Hello World!
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FrylockAuthor Commented:
Thanks guys!
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simpswrCommented:
I've been there! . . glad you got it working
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