Long time viewer, first time to post. I am trying to replace the hard drive in a Pentium P55C W/MMX XB1/MXB1 200MHZ computer (Pionex). The OEM HDD crashed and is usless. I bought a new 40Gig hard drive and followed all installation procedures to no avail. I then used another computer to format the hard drive with no problems. Now when I put it in the P55C, the computer will not detect it. The computer hangs up on "Detecting IDE Primary Master." The jumpers are set just how the digram shows and it does give me the option of going into set up. The new hard drive is a Maxtor. My Bios info is, Bios Award 4.5 IPG. Is there any way to reset the Bios to OEM without Flashing?