Have a Dell OptiPlex 745 with a newly installed Windows 7 64bit OS. Everything works fine with the exception of the included Microsoft Games - Solitaire etc., - they begin to load, and then throw up an error screen "the executable for Solitaire Game has stopped working". Same result with all the other card games. The suppliers of the machine (Official MS Re-furbers) say it must be because Windows 7 is not 'officially' compatible with the Pentium D processor. Which strikes me as weird that everything else works just fine - just the card games don't. If anyone has experienced this and found a work-around, I'd be grateful for the shared knowledge. Specs: 4Gb RAM, Pentium D 340GHz 64bitOS.