Well, I'm kinda really depressed right now. HDD is Seagate 2TB ST2000DM001. It's about 14 months old and there weren't any bad sectors or any indication of windows or drive slowing down. I shut down my PC last night (no indications or any issues) and today when I started my PC, it simply gave me a BSOD and restarted and continued the loop. I tried formatting it using a windows disk, but system freezes once windows 7 setup goes past loading files. Then I plugged it out and installed windows on an old 80gb drive to check, it installed fine and windows started working fine. Then I plugged in the 2TB drive again but again system froze and windows won't go past logon screen. I've checked DVD drive and rams, there isn't any issue with them.