i have windows XP and i installed the free version of SAS on one of my computers and it worked, but not on the other…i have a virus on this other computer and SAS won’t run, i double click the icon and it does nothing…i rebooted and everything…
did you try safe mode?
hm…no, how would i do that?
ok ok yes now i’ve done that, it did not work 
is SAS the only thing that wont run?
yes, everything else is a-ok
hellp help! welcome to the forums, please visit this thread and follow instructions
https://forums.comodo.com/empty-t27334.0.html
You say that you cannot install SAS, that’s ok… Please pay attaention the area Experience mentions Hijack this