Computer won't turn on after storm.

[whitekins]

Last night a storm made all my lights turn off for a split second and when everything came back on, my computer was connected to the surge protector and my monitors still work fine. However when I turned on my computer the fans turned on and everything sounded like it was working fine but the monitors weren't picking up a signal, and when I tried holding the power button to turn off the computer it would not turn off. After unplugging the computer manually, it started for half a second and turned off and after that it would not turn on at all unless i unplugged it for a bit then it would turn on for a split second and turn off. However I had a frined take a look at it and when he tried a different cable to plug the computer to the wall the computer turned on but again the monitors didn't detect it and the power button would not shut it off, so manually we unplugged it and when we plugged it back in the computer started for a split second and turned off. And would not turn on again. We switched cables and the same thing happened. Please help.

We have tried unplugging RAM, unplugging the GPU, and unplugging the memory device but the motherboard doesn't give us any beeps at all.

 

[tiny voices]

What are the specs of the PC? Including PSU.

 

[whitekins]

What are the specs of the PC? Including PSU.

8 GB generic RAM.

GTX 750 GPU

AMD 4 core processor.

670 watt PSU

Motherboard: AM3 ultradurable, thats all i know

 

[tiny voices]

WHat make and model PSU?

Sounds like a crap unit. This is the single most important part of a PC. Sounds like yours was junk and did a poor job of protecting the PC from a surge and damaged some or all of the PC.

 

[Knucklehead545]

Well first off if you have a modular PSU you could have fried the mobo if not then the PSU could have been fried
I suggest that you get a surge protector with a built in battery or unplugging it during a storm and this won't happen again
If you need anything else private message me and I'll respond
-Knucklehead545 :3

 

[tiny voices]

A modular PSU has nothing to do with whether something was damaged or not. Nothing at all.

 

[Knucklehead545]

A modular PSU has nothing to do with whether something was damaged or not. Nothing at all.

well his fans are still working so maybe the passage way to the mobo

 

[mcnumpty23]

yeah we had some terrific lightning here last night--sat watching it till 1--30 am

try taking out the 20/24 pin from the motherboard

unplug from the wall--press on/off a couple of times

plug back in 20/24 pin and plug into the wall

press power button

every few months my asus board does same as yours is doing and that always works to fix it for some reason

 

[tiny voices]

A modular PSU has nothing to do with whether something was damaged or not. Nothing at all.

well his fans are still working so maybe the passage way to the mobo

No, a modular PSU has no different form a standard one in power delivery. Sorry.

 

[westom]

I suggest that you get a surge protector with a built in battery or unplugging it during a storm and this won't happen again

A UPS is clearly not a surge protector. Well it does claim surge protection - subjectively to naive consumers. But anyone can read its specification numbers. Destructive surges can be hundreds of thosuands of joules. How many joules does a UPS claim to absorb? Tens? Hundreds? That is near zero surge protection.

Power system is more than a PSU. GPU, RAM, etc are not part of the power system. A useful answer is possible by requesting instructions, a meter, and minutes of labor. The resulting numbers from six wires define what is suspected or exonerated.

That is how informed techs do it. A second option exists. Just start replacing good parts until something works. Shotguning means you are just as good as anyone else at selecting what to replace next. Those are your only two options.

A power controller decides when the PSU powers on. Your symptoms imply it powers on for a second. Then the power controller orders the PSU off. Nobody can say anything more useful without those numbers.

Meanwhile, even that UPS (with near zero protector parts) would need protection only possible with a 'whole house' solution. Destructive surges occur maybe once every seven years. If that concerns you, then the $1 per protected appliance solution is obviously a superior, best, and least expensive recommendation.