MSI 8348 won't detect writable media

Hi Guys,
This is really annoying but hopefully simple to fix.
My MSI 8348 dosen’t seem to recognise writable media, I have tried maxellSQ (works infrequently), swisstec, sky.
Don’t know if it’s hardware or software.
Can’t find anything useful on MSI website (they don’t list 8348), the auto update utility only finds utilities for motherboard.
I am running XP Home SP1.
HELP SOMEONE!