I can't open some .exe FILES. I'm trying to install some drivers on a PC with xp, but for some reason when I click on the setup.exe file, nothing happens, it doesn't open or run anything. I thought that the driver was corrupted, but I tried to install that same driver on another pc with xp and it worked.  I tried to install something else, at first the little window showing all the files that are being STALLED shows for a second or 2, then it disapears, it doesn't complete the installation. I should get a message saying that the installation is complete, but I do not get the message and I don't get any error messages, it just does nothing. Someone suggested me to update the ms installer and to update net frameworks to the latest version, I did what was suggested, but I still get the same problem.  I'm sure i'ts not a virus or SPYWARE because I just made a fresh install of xp and I haven't gone online with that pc and I haven't downloaded anything from the net, even before making the fresh install, I didn't have any viruses or spyware.  It seems that for some reason I'm not able to install certain programs, because I can open  and run other .exe files with no problem.  Could I be missimg a dll or an ocx or something else that's preventing me from running or installing certain .exe files? Your help wll be greatly appreciated.  By the way, I have windows xp pro sp 2 on that pc. What driver is this that will not install ? ?