Thanks WR2. Board is made by Wistron and as far as I can see, Fujitsu don't use the card on their other machines having checked some online schematics providers. Also checked on-line part number (07254) and project numbers (91.4H701.001) and everything points to the PA3553 model unsurprisingly. Wistron website is not detailed...I might send an email in low expectation as they're a big organisation. It was a long shot to see if anyone has replaced their cards.....i see countless complaints of overheating and burnouts.....Think I'll buy a decent desktop to watch my films....easy to replace parts. Thanks again.