I used to have avg and liked the format -then I bough a two years' fully comp' upgrade which was on special offer at computer shop but had problems after the first year. Too complicated to go into here - anyway,uninstalled that and put in avast (free) but I don't really like it - it keeps telling me I have unreputable add on and all sorts of things but I don't seem to be able to resolve problems without buying an upgrade.
Can I uninstall it and then install (free)avg without getting complicated - am not computer literate. Many thanks.