Re-installing avg

Sylvia, Have a look @ this AVG article (http://avgclick.me/howtoreinstallAVG). Use the AVG Remover Tool Tip to be sure all previous AVG is removed.
AVG Guru

My computer repair man uninstalled  my AVG because my desk top resolution kept going back to 8 bits ( don't really see the connection) and replaced it with a trial period AVG programme.  I now need to re-install AVG - do I need to uninstall the trial programme first?

Sylvia, Have a look @ this AVG article (http://avgclick.me/howtoreinstallAVG). Use the AVG Remover Tool Tip to be sure all previous AVG is removed.
AVG Guru