I havn't had much luck, I tried repair install and that crashed after it restart for the next phase of installation
Then I tried an overwrite install which crashed after restart again (Disc read error)
Now I am going the whole hog and reformatting the drive and hopefully that will fix the problem. If not I have no idea
I did have 2 discs but I removed the other one for the purpose of simplifying troubleshooting.
I went into the BIOS (with the help of a PS2 keyboard because for some reason the usb keyboard wouldn't work) and set it to boot first from Cd then from HDD
I will give you a buzz in a few hours to see if the reformat worked.