Display goes off but system is running

Jaiff

Distinguished
Jun 1, 2015
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Hi

Sometime suddenly my pc display goes off but the system is running. Then if I completely power off my system and power on again it doesn't show display but if I wait 10min and power on again it shows display.

I have Kingston hyper x 8GB ram & GTX 960 Graphic Card.

So what could be the problem I think it happening because of Ram but I check memory test it shows its fine, I already updated nvidia driver and also Updated windows.

Please tell me what should I do and how can I diagnose the exact problem?