Code 39

I recently have had internet problems and had to get a cheap data to wifi router. My PC's old wireless adaptor did not have range to detect the new router so I grabbed and older adapter and used that. It was fine before the issue. I installed a driver off of the website and it gave me code 39...

if i'll buy r7 260x i can buy a 4gb ram too. that means 6gb ram for me but if i buy gtx 750 ti, i cant buy any ram suggestion guys? gtx 750 ti $20 dollar more than r7 260x in my country. Is gtx 750 ti faster? I wanted to play games like AC:Unity, Shadow of mordor and Watchdogs