Computer freezes While I try to record/Stream League using OBS

[Bieker]

I can run League of Legends just fine I run 200+ fps on the highest settings for everything and then around 150 whenever I'm running OBS. It works most of the time without freezing but every once in awhile my computer will just freeze and I have to hard reset it like hold the power button down.
Graphics Card is a 750Ti and I have (2 x 4) = 8GB Dual crucial Balista ram and a Gigabyte Z97-c Gaming 5 motherboard

 

[Hawkshot]

this could be caused by overheating, driver confliction, power supply failure of a fair few other factors. What I will ask you to do is monitor your temps with a program called Core Temps to make sure you're not overheating, also make sure all your drives are upto date, maybe install a program called Combofix from bleeping computer onto a USB then start the computer in safe mode and run this program, if both of these still don't solve the issues come back to me.