I do not know exactly what issue you have with Toshiaa I7 and Avast Free .. But what I would suggest is boot into Safe Mode, run the Avast Uninstall Utility, reboot, download the Full Off Line Installer (on page 1 of this thread) and then do a clean install of Avast .. see if that works. .. If not, then someone here with more experience with these glitches should be able to find a fix.