display losing signal

da_man1

Honorable
Nov 16, 2012
19
0
10,510
When heavy gaming at random but recently more often my monitor shuts down saying "no signal". I read here that it could be due to high temps on the CPU so I unplugged everything, opened up the rig and switched the fan from my CM V6 to the Intel Stock one (the CM has to be cleaned up and my CPU is not OCed anyways).
When turning on the pc I have a 640x480 resolution on black and white and on device manager the GPU has an erorr (48c or something like that) saying that the GPU had a problem and was stopped. I rebooted fearing that it had died but everything is ok now.

What can it be? I read here too that the PSU could also be the root cause not powering the GPU well, or the motherboard not redirecting well the electrcity.

Intel i5 2500k
gigabyte z68x
antec 650W
MSI (bought in july 2015) gtx 970 gaming 4G