WHEN I OPEN UP THE AVAST INTERNET SECURITY ICON INSTEAD OF GETTING THE BLOCK OF INFORMATION ETC. ALL I GET IS A WHITE BLOCK AND I HAVE TRIED TO RELOAD AVAST AND THIS IS THE AVAST PRO PROGRAM. I ALSO HAVE TRIED THE REPAIR OPTION AND HAVE HAD NO LUCK WITH THAT. I HAVE NO OTHER ANTI-VIRUS PROGRAMS ON THE COMPUTER. MAYBE SOMEONE ELSE HAS HAD THIS PROBLEM AND MIGHT HAVE A SOLUTION?
There really is no need to shout.
Perform a clean installation of the latest version with the off line installer.