I have the free version of Avast anti-virus installed on my computer, but the recent problem that I am now experiencing is the fact that everyday I switch on my computer a window pops up telling me to close my computer down, and it gives me a choice to postpone it for a number of time periods, I generally tell it to postpone until Next Week but sometimes longer, but all to no avail, it still appears the next day.
I have been advised to close down the programme and reinstall it, but I am not sure how to do this or if there are some difficulties in carrying out this operation, can anyone help me out please?