One subjection, is to try upgrading your bois. I ran a 12Gig hard drive in my machine, and according to Packard bells website, my motherboard had only been tested with hard drive as big as 30 gig, so was unsure as to if it would take a 40gig.
So i upgraded my bois with a download from PB site, and installed my hard drive with no trouble. I now run two 40gigs side by side, but because i never tried installing the 1st one with old bios, I?m not 100% sure that the old bios would have failed, but it can't hurt to have a try.
Just be sure that you have the correct bois upgrade, as trying to install the wrong one can have fatal results.