Hello. I'm using Windows 7 professional and i'm facing problems when i start unpack 2gigs+ .rar files my cpu usage is around 0-20% but while after running unpack my cpu usage goes 70-100% and all my usb ''unplugs'' from windows. Used programs: Winrar, 7-zip and Free RAR Extract Frog but all goes nuts. I faced this problem at RC aswell, did clean install when did go pro so not prob that uprage would be gone wrong. Machine name: METALFUCKER Operating System: Windows 7 Professional 64-bit (6.1, Build 7600) (7600.win7_rtm.090713-1255) Language: Finnish (Regional Setting: Finnish) BIOS: BIOS Date: 09/24/08 13:24:57 Ver: 08.00.14 Processor: AMD Phenom(tm) 9750 Quad-Core Processor (4 CPUs), ~2.4GHz Memory: 4096MB RAM It's able to be prob whit my old bios or i need some drivers whit my AMD?