Hi Andre, could you please take a look on pictures below? I have usually problem when i connect some USB device, but sometimes just on mouse move the system blows up, processors are on 100% and disk usage is also extremely high, need to restart my notebook I have all drivers updated with Driver genius professional to the newest, but not helped. Also BIOS is updated to latest... system: Acer Aspire 8935G :: Processor - Intel Core 2 Quad Q9000 2 GHz :: Memory - 4096 MB, DDR3 :: Graphics adapter - ATI Mobility Radeon HD 4670 - 1024 MB, Core: 675 MHz, Memory: 800 MHz, DDR3 :: Harddisk - TOSHIBA MK5055GSX, 320GB 5400rpm WIN 7 PRO x86 http://img294.imageshack.us/i/23394017.jpg/ http://img693.imageshack.us/i/55481186.jpg/ thanks in advance Tom