I first noticed the problem when my computer would try to run a complete virus scan with avg. Since other functions worked ok, I forgot about it.
I'm currently using FAT32 and want to convert to NTFS and decided to run defrag first. Defrag locked up at 1% (I left it alone for 24 hours to make sure that I wasn't being too hasty). After unsuccessfully trying in safemode, my father recommended Norton Systemworks. He uninstalled avg and installed systemworks. We still couldn't defrag the c: and Norton Disk Doctor wouldn't run after startup, but chkdsk would. Norton Antivirus would lock up as well.
I then decided to try to convert to NTFS. It locked up after chkdsk ran first. It proceeded to return to this every bootup until I went in in safemode and told it to restore to the last known good boot.
Anyone got any ideas on what my problem might be?