Very sorry, I didn't notice Page 2 and your posts - thanks; I do have a swap partition (antiX added it - I selected that option whilst installing) but the graphics card failed (15 year old PC) and after advice from http://www.motherboards.org/forums/
(incredibly helpful) I have ordered the very same item (which may therefore not work!) from ebay and a backup item from new that is higher spec'd (which may not work for different reasons!).
I will let you know the outcome.