The trouble is with booting up windows. I have set up the Windows 7 varios times. I have tested swapping every and each peripheral separately but even I am not capable to search the trouble for this. Commonly for this type of consequence the chief concludes is RAM. I own Corsair cmTwox2048-6400c5c TWINS. So I observe that the trouble is with the memory examples but when test these examples on other PC, they function properly. Furthermore I have tested so many particulars which I cannot explain here in order to figure out the trouble but no luck. I hope that my new pc is not dead.