Computer went *pop* - now won't turn on

demax51

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Feb 6, 2012
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18,510
So last night I was playing a game on my computer when I started having trouble with my internet. I restarted the router, and decided to restart my computer while I was waiting (in order to finish installing an update for a Razor peripheral).

Right as it was shutting down/about to restart, I heard a loud pop come from the case, the computer turned off, and wouldn't turn back on.

I inspected the case and didn't see/smell any smoke, nor any signs of burn damage.

I'm assuming this is an issue with my PSU (Corsair HX750) - I tried the "paper clip test" and it failed, so I'm pretty certain the PSU has blown.

HOWEVER

I had recently RMAd one of my graphics cards, and just got the replacement yesterday. It had been working fine all evening, but I'm worried that the replacement card may have been what led the PSU to blow.

If that weren't enough, however, there were also some thunderstorms in the area last night. I have my rig plugged in to a grounded surge protector, though, so I wouldn't have expected that to cause any issues.

Any thoughts here, guys? I'm borrowing a spare PSU later tonight to see if my rig will start up (hopefully, if it was just a faulty PSU, it didn't take anything else out with it when it blew). Do you think it could have been something to do with the new GPU? Do you think it may have just been the thunderstorm, despite the surge protector? Any help or advice would be greatly appreciated - there are just so many variables at play here, I'm not entirely sure what I should do - I don't want to run the risk of blowing another PSU, or causing any more damage to my system.

Thanks!
 
Solution
The pop you heard was likely a capacitor going beyond its limit it overheats and builds pressure until it quite literally pops.

This is usually a PSU problem, but check the motherboard for any capacitors that look different, they will not have a flat top like all the others.

I hope the spare PSU you use tonight will sort things for you!

KalTorak

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May 25, 2012
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The pop you heard was likely a capacitor going beyond its limit it overheats and builds pressure until it quite literally pops.

This is usually a PSU problem, but check the motherboard for any capacitors that look different, they will not have a flat top like all the others.

I hope the spare PSU you use tonight will sort things for you!
 
Solution

demax51

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Feb 6, 2012
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18,510
Thanks, guys!

@tiny - I didn't really think the GPU had anything to do with it, but the timing made me question it. Hopefully the replacement PSU will work and there are no other problems.

@Kal - I figured the pop was from a capacitor blowing. I inspected the MoBo and it didn't look like there was any damage to it or any of the on-board capacitors. And thanks, I hope so too!