I did not buy the Vapor -X 5770, however I do Have 1 XFX 5770 and 1 Sapphire 5770, using cat 10.2 having no issues on either card so far. I also have 1 His 5770 in a separate machine on Win7 no issues. I believe that if you are still having issues the general consensus is that its a bad card and to RMA it. If you haven't taken the plunge yet, go for it. The card is a good one.