If you can boot from the A-Drive and not see the C - Drive, and can boot
from the hard drive and not see the A-Drive, there was a very annoying virus
that caused this problem that we found at quite a few locations a few years
back. Have you tried Norton Anti Virus?
Greg DeLong
The NOSPIN Group is now offering Free PC Tech
support at our newest website:
http://freepctech.com