Uninstalled Norton when free trial period was up on new laptop and installed my tried and trusted MBAM and Avast programs. Result? A black screen. Searched the net for an answer and found this:
http://forzeal.com/avast-black-screen-problem/
Too careful to accept that info at face value and thought I would ask here. Is, or could Avast be, the cause of the problem. or is it merely a coincidence?