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Upped the voltage on my PSU after i bought a new video card and it blew out. Comp now restarts while playing games or movies

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March 14, 2014 2:13:20 AM

Sometimes it restarts just using the computer.

I bought a new PSU at 750, my old one was 480


The old video card also makes the computer restart while playing video games or movies, but not as often as the more powerful video card


I went from a radeon 6670 HD, to a 7850 HD, which required an additional 6 pin(which I had to buy an adapter for because my MB did not have it)

on the box it says it required a 500 watt psu. anyway i upped the voltage and the psu blew out and stopped working


bought a 750 watt


now the computer shuts down when playing games or movies

on both cards


what could the problem be?


im thinking its the motherboard, no way both cards don't work. please help i need to fix this ASAP.


im thinking of buying a new motherboard

My MB is an M68MT-S2.
a c 119 ) Power supply
a c 155 U Graphics card
March 14, 2014 2:16:59 AM

What model are the PSUs?

Also, what do you mean by 'upped the voltage'? Changed the switch on the back of the PSU?
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March 14, 2014 1:17:45 PM

yes changed the voltage. but i do know the old one blew out because i saw a spark when i flipped the switch and it stopped working. computer wouldn't even turn on
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a c 119 ) Power supply
a c 155 U Graphics card
March 14, 2014 5:36:09 PM

Yeah, changing the voltage selector does that. Good PSUs generally auto-select; that switch is a sign of cheap-and-nasty.

I'd strongly suggest getting a real PSU, something in the 500W+ range from the second link in my sig.
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March 15, 2014 1:18:13 AM

i have a new psu. its a 750w inland gold series.

the computer wouldn't even start after the 480w blew out after i switched the voltage.


my issue is the computer shutting down when i play games or movies or sometimes just leave...im thinking what is the problem after the old one blew.


im thinking its the motherboard.
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a c 119 ) Power supply
a c 155 U Graphics card
March 15, 2014 1:32:10 AM

That's junk. Replace it with something decent. Chances are it can't supply what's on the label, and is shutting down when your GPU tries to pull anything from it.
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March 15, 2014 3:43:51 AM

so the blow out did no damage and the brand new psu is just bad?
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a c 119 ) Power supply
a c 155 U Graphics card
March 15, 2014 3:53:15 AM

We don't know until you get a real PSU. The new PSU is definitely bad.
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