In the course of trialling a number of small business AV products ( used Webroot up to now) I installed various products and was always careful to use the products uninstaller tool where available to remove it before trying another product. One of the products I trialled was AVG Business Edition and in due course used the AVG uninstaller tool to uninstall ( tried in both normal and safe mode) . However I now notice that Windows security centre is reporting AVG to be switched off i.e. it thinks AVG is still installed and on further examination I see that I do indeed have an AVG folder in program files with a considerable number of "exe" files in a subfolder AV. How can I completely remove all traces of AVG ?