PC screen keeps going blank

  dom1no 11:33 14 Apr 2014

I recently built myself a new gaming pc, but i have a few problems.

It starts fine, and runs perfectly, but after about 30minutes or so of inactivity my screen goes blank. It isn't just in sleep or hibernate mode. The light on my screen indicating it is on just flashes but does not go solid blue to indicate that it is working. (moving my mouse or typing something on the keyboard would normally "wake" my pc up)

I have moved the ram card to a different slot once or twice and this seems to get my pc running again, but then it just repeats this problem.

Is there anything permanent i can do to resolve this?

  dom1no 12:01 14 Apr 2014

It's a custom pc.

All the parts are brand new so i really do hope its not a faulty gpu. Will test tonight with a different monitor, but i get a funny feeling that it is the memory.

GPU - amd radeon R7250 OC edition RAM (memory) 4gb patriot ddr3 motherboard MSI B85-G43 gaming motherboard

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