I am running a partitioned Imac, almost exclusively in Windows 7. For the past couple of weeks I have had difficulty maintaining internet connection. When I check on the task bar I see that it is constantly reconnecting or when I click on an online programme such as the mailbox, I sometimes get an "Error 501" or "The network connection was reset" message. Refreshing the screen or even resetting the router solves the problem for only a short time. BT, my provider, have checked my line and found no fault with my broadband. I'm fairly certain the problem lies within my PC. It persists whether I connect wirelessly or to the router, or with a cable - though swapping over sometimes clears the problem for a short time. I have always had AVG, and occasional run McAfee scans.
I attach a system snapshot file.
Any help would be very greatly appreciated