I had a problem regarding Avast last January. the result has been that I cannot bring certain files up.\neg. C:\ Program Files\NCH Software\Switch\switch.exe - 'the specified pathway does not exist . . check and try again. This applies to 3 pathways.\nIt is my fault, after the problem with Avast I tried to delete it from control panel, would not let me, I tried various ways but to no avail, so I went into registry to delete entries . . . yes you guessed !!!!!\nbut I cannot get any help on how to reinstall not even Avast or any other virus checker.