It's actually a Sharp LCD TV. But it's doubled as my desktop's monitor for 5+ years without any problem. The really weird thing is there's no issue at all if I turn it on after Windows has loaded. It's only if it's already on when the computer is turned on that this will happen. Avast! is a little resource heavy for my liking, I recently uninstalled it from all my systems and installed MSE instead. MS Security Essentials will do the same job at a fraction of the resources.