Computer wont boot after upgraded graphics card

Hey, I just got the MSI Radeon 7950 3GB blah blah and tried to install it in my pc I built. It doesnt boot or show video at all and it gives 1 beep then 7 beeps then another beep.

I have AMD FX-6100 CPU, a 5.1 rocketfish soundcard, 2 sata II HDD's, and 4 case fans and 14 GB of Ram(4gbx3 and a 2gb stick). My PSU is 880 watts.

I have tried reseating the memory, unplugging all the fans and HDD's, putting a comforter over it to heat it up and cool it(saw it on youtube ) , spraying the dirt out, redoing the the thermal paste on my CPU and thats it.

It worked like 4 hours ago with my GTX 550 Ti when I was playing Garry's Mod.

Anything else I can try?
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  1. Best answer
    If your motherboard is using a AMIBIOS, 8 beeps means bad VRAM on the video card. Re-seat the video card be sure the entire card bus is in the slot. If it still fails try putting the old card back in and see if it works.
  2. No, I have had the PSU for about 7 months now^

    And I have a asrock 770icafe motherboard.
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