I did try with the 7300gt but still had problems with it, si I thought it may have been a faulty card and as it is running quite happily with the ATI card I will leave that in, I am not into gaming and probably it is not as fast as it would be with the 7300gt it will be OK for me.
I had exactly the same problems with GEFORCE 7300gt and finished up taking out video card and replacing with a ATI rage pro I had and it loaded with no problems whatsoever and is running great