A recent problem at bootup is that the bios does not recognize my "C" drive sometimes. I simply reboot (Control/Alt/Delete) and everything is fine. Very strange that in the last couple of days, sometimes I do not have a primary master. I run 4 hard drives and the bios sees the other 3. The rest of my system is SCSI, by the way. It should not be a power problem, as my power supply is 420W. is it possible the hard drive is going bad? It is 30 gig, the "D" drive is 30 gig and the other two are 15 gig each Thanks, Bob S.