Right bare with me I'll have a look, as i have the same problem, only way i could stop it was to **** around with power settings, gimmie 10 mins and ill try to find out.
Do step one if you don't have the option. See if that helps...
I CANNOT BE HELD RESPONSIBLE FOR THE .REG FILE! CHECK BEFORE YOU RUN IT!
Edit edit -
This is abit of an easier route to follow, plus you know nothing is getting messed up in the registry,
Hope this helps pal.
Edited by SickDave, 17 February 2013 - 21:51.