The hard drive in my system is not getting detected. The problem started when I was copying files from my pen drive to the hard drive. All of a sudden everything seemd to be hanged and a blue screen with the error message appeared. After restarting the system it showed up but again it went to the hung status and the same blue screen. The hard disk is not even showing up in the bios. The interesting part is that after trying various hard disk utilities it showed up again and after running for some time it again went to the hung status and blue screen reappeared. Changed power supply and bus, then also it did not show up. Then I tried reinstalling XP, the hard disk was detected by the set up but it returned the error that "can not create system32 folder".
Could any one help in identifying the issue.