Question monitors go black pc keeps running

[MattR_TMP]

Ive been having this problem for a while thought it was a GPU. Bought a new one didnt help crashed in less than 24 hours. Monitors go completly black while my pc keeps running. This problem is driving me insane please help.

 

[Nemesia]

What is your PSU?

 

[MattR_TMP]

Dont know the brand off hand as i didnt build this one but its a 1000watt