I've this GPU Ati Sapphire 6670 and I was playing DeadPool the game when all of sudden the pc shut off and I thought maybe a cable was lose or something like that and I started looking for the Error and The next thing I know I disassembled my entire PC and started looking for a problem and I Finally deduced that My GPU was causing the trouble since my PC powers up without the GPU so I put that GPU in another PC and it didn't work there either so I know my GPU is Not Fine so Any Ideas?