Mining my own Computer keep's crashing

[bossramsay15]

Alright first of all im trying to Mine my own computer, First im using this software/Tutoural : http://www.hackforums.net/showthread.php?tid=3303319

My computer is only mining at 100mh/s MAX, it's only average it shouldnt be crashing though right? My computer dosent get that hot, i have USB fans plugged in dosent matter what i do it just shut's down

I know i can change the BOIS setting because there is a shut off point for CPU Usage but i only ever see it maxing out at around 20%, Im a bit stuck all help would be great

Computer specs : http://gyazo.com/cf47c392353f0287bb6bea911c4b1a7f

Not the best but it does the job, Besides mining. Cheers