Hello Arthur,
We regret to hear about that. Do you receive any error message when you try to run the programs? You could try to use AVG Rescue CD as describe in this article http://support.avg.com/SupportArticleView?urlname=What-is-AVG-Rescue-CD to scan your PC for virus.
Please, feel free to let us know if you require any further assistance. Thank you.
I am having issues that will not let me run AVG, Internet etc on Windows 10 i.e. any external program crashes when I try it. Can I create or obtain a version of AVG that will test for viruses before windows starts. e.g. a bootable version of AVG?
Arthur, The AVG Rescue CD download info is located in the 'Business' section of the AVG Download Center. Also have a look @ this webpage (http://www.avg.com/ww-en/226386).
AVG Guru