This is the same problem that I am having with 64bit Win7 Ultimate. I had an earlier version of SAS, so (following the advice above), uninstalled SAS & reinstalled the current down loaded version. I reentered my reg. number & SAS returned a msg that the trial period had expired. Have yet to reboot & see what happens.
As a side note, I am also using Comodo Firewall. I checked Comodo & it does not appear to be blocking any SAS executables.
MLStrand56