Intel motherboard dg31pr restart problem

[hari4ualws]

hello sir. My intel motherboard dg31pr is giving some problem. system is getting restart automatically. If its running for sm half hour or so, sm green patches cover the monitor and picture is not visible clearly. So pls help me out in this...

 

[truegenius]

post some more specifications of your cpu.(Use cpuid)
also post temperatures (use hwmonitor or hwinfo32)
and post psu/smps company and model