Hello ,Two days earlier my system got crashed while i was browsing web .My mouse and keyboard also stopped working even reset and holding power button to power off was not working and i got a BSOD error A clock interrupt was not received on a secondary processor... this happens when i play games or i use win7 in normal mode so i update my BIOS but then it works normal for hour but still the same thing happens and today when i power on system then during boot a BSOD error came error code was 0x0000007F here is my system info [ATTACH]7728[/ATTACH]. and here is my sysnative file collection [ATTACH]7729[/ATTACH].If anyone know wats happend to my pc so please response.THANK YOU