Hi! if you haven't your problem solved yet, you may try(if your games you trying to install are old) to install and run in compatibility mode in windows xp sp. 3or sp.2 or if they are very old try 98 me or 2000 but xp mode usually always get the job done.To install and run, right click on setup.exe/game.exe then click properties click compatibility select one of the modes.
I hope this will help you best of luck