Here's a pro-tip.
Unplug your computer while it's still running. Plug it in and when the prompt menu comes up, tell it to run in "Safe Mode".
Once you are booted up, run AVG. Safe Mode deactivates and keeps the Trojans from hiding again, so AVG can neutralize them.
When I got a virus, I did that. Got rid of it in seconds flat. Bugger hid in my Windows folder...