ok i have been an avast user for 5 yrs!!! i just bought the avast internet security for 29.99 for 3 pc’s. installed into my dell laptop and now its freezing up my windows startups and windows itself!!! it is Avast that is the problem and I’m freaking fuming mad. I am in safe mode now with everything working. but as soon as i get out of safe mode i cant do anything. i have tried everything. this sucks!!!
suggest a clean install of avast - read and follow the instuctions here for a clean install http://www.avast.com/uninstall-utility