Also I heard a slight clicking noise from the hard disk. YES I KNOW. My HD is probably broken and I need to get a new one ASAP. What confuses me though is, I recently (1 week ago) made a routine hard disk error check and everything was okay. Also now that windows has booted, everything runs fine and not slow at all, including hard-disk heavy operations like filesearch. I don't wanna reboot right now, so I can not error-check C:\.Could there be any other possible (maybe software) reason for this ?