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PC Auto Restarts while playing games on ultra settings after installing Brand new GTX 780

My Computer has been restarting automatically whenever i try to play any game at maxed out settings about 15 minutes after i get past loading and menu screens. But strangely running burn in tests on the video card does NOT make it restart so i do not think it is the PSU. One thing i did notice is when i went to go play GTA IV yesterday all my graphic settings were set as low as they could be (by the game) and i couldn't change them it said not enough memory (but it showed that i was only using 350mb/3000mb) and when i play Witcher 2 and Arma 3 i get a notice from windows that says I'm running out of video memory would you like to switch to windows basic (its says something like that).

I'm going to move the video card into my other PCI-E slot and see if the problem persists. The PCI-E slot its in now is a PCI-E 3.0 x16 and the other one is PCI-E 2.0 x16.

I never had this problem before until i upgraded my GPU from a GTX 560 to the GTX 780

Here are my Specs
i5-4670K
GTX 780 Super clocked
ASRock Z87 PRO4 LGA 1150
G.SKILL Ripjaws X Series 8GB (4 x 2GB) 240-Pin DDR3
Apevia 700W PSU
250gb 840 evo
1tb WD Blue HDD

I Appreciate any and all suggestions. i just need to get this fixed.
Thank-you


EDIT :

I Moved the GPU over to the PCI-e 2.0 slot and I was able to change the graphics setting on GTA IV but when i ran the GTA IV benchmark the computer Restarted after a minute. I dont know what to think but it seems like when i play a game that uses more than 1gb of the video card's ram it auto restarts...
2 answers Last reply Best Answer
More about auto restarts playing games ultra settings installing brand gtx 780
  1. Best answer
    Did you download the most recent drivers from Nvidia's website? Do not use the drivers on the disk, they are always out of date.

    Did you connect all the power plugs that are needed to the card? Did you have to use some sort of added adapter connector? Perhaps it isn't getting enough power or AMPs.

    The card could be faulty, though that usually doesn't just restart the computer, where as a faulty PSU will. If you have another system that you can test it in, that would be worth doing.
  2. it was the power supply i went down to best-buy today and picked up a Corsair 750m PSU Works great i hope it stays fixed
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