After uninstalling Avast, browsers do not work. The network works, update drivers, programs, ping works, but browsers do not function. So that browsers work, I need to disable and then enable the network driver. I did all the procedures suggested by Avast, but does not work. My network driver is: Killer E2200 PCI-E Gigabit Ethernet Controller (NDIS 6.20). Browsers are Mozilla and Internet Explorer. Can anyone help me?