Reinstalling avg

Hello Linda, I am sorry to hear that. I suggest you to reinstall AVG Internet security on your computer. Please follow the steps in this article http://support.avg.com/SupportArticleView?urlname=Download-and-install-AVG-Protection to install the updated version of AVG Program. If you face any difficulties, please contact us, we will assist you further.

Engineer took avg off laptop during repair as he said it was causing problems. Laptop ok now but avg has disappeared. 
do I have to download avg again to reinstall. I still have 18 months to go on contract

Hello Linda, I am sorry to hear that. I suggest you to reinstall AVG Internet security on your computer. Please follow the steps in this article http://support.avg.com/SupportArticleView?urlname=Download-and-install-AVG-Protection to install the updated version of AVG Program. If you face any difficulties, please contact us, we will assist you further.