ok so i built a new pc and it was all working fine til a week ago when i rebooted and the ntlrdr was missing so i tried to reformat that didnt work it just froze on formatting. another thing is i had to unplug the hd sata to get it to go into windows setup. with the hd plugged in it freezes on post or it goes to a black screen ive tried 2 different cpus and tried single sticks of ram in each slot still nothing. also tried 2nd hd and still same problems wont load windows ect, also reset cmos anyone got any ideas