|Thanks for your responses.|
Unfortunately the problems got worse & Windows setup isn't loading properly from the boot disk. It's just hanging up.
The initial issue was that Windows was not loading & I was getting a NTLDR error message, I then managed to get a message that hal.dll was missing or corrupt and was trying to use recovery console to copy the file over to fix it.
I hadn't tried restore since it's a fairly fresh install I figure a restore was about the equivalent of a reformat.
I could not log into WIndows and was running the repair console from the recovery disk, it was not asking which install to access but there was only the one Windows XP (SP3) install to pick from so I don't know if it was meant to ask.
I tried the 'logon' option in repair console but it did nothing, just went to a new prompt line.
Considering I can't get it to even run recovery console a reformat may well be in order, unless anyone has any other suggestions.