Desktop running windows XP home is infected. When I try to get on fire fox I get a message that I am infected. I also keep getting a security warning that application cannot be executed. The Wuauct exe is infected.I also keep getting another warning box popping up That says anti software alert,Infiltration alert. I ran Malwarebytes in safe mode and did a quick scan and one item came up which I removed. I rebooted then ran another full scan. IT didn't detect anything so I rebooted in normal mode. I was unable to open Malwarebytes program and the same messages above still popped up. Please help!!!