What kind of computer?
what bios utilities?
If you boot to bios, does your bios have utilities to test the drive?
If windows boots, can you get to services and check for disabled services?
Not recommending that you make changes, but can you run regedit and search for load= or run=
can you run disk manager?
can you get to admin tools?
How close to full is the drive?
sounds like either a virus, (maybe blocker) or possibly a bad drive. Get us some more info.
I suggest you start with system edit or system configuration and disable all startup items for test. You can turn them
back on if this does not help.
Go to device manager, show hidden devices and see if anything is unusual or not working.
Edited by pm79311, 13 June 2009 - 01:19 AM.