Hi recently i have updated the Bios and everything is working fine except as i let my PC sit for some time ill find my screen black as i shake the mouse to wake it up the User screen will apear as i select it, it will just go black and wont load to desktop i could hear that it has not fully woke up due to CPU fan not at normal speed to low, i would have to reset the PC. What in the Bios i should i be looking at or is it with-in the OS Power Management. Thanks