I disabled everything (including Windows Firewall, which I overlooked before). Norton appears not to be installed - it's not on the Add/Remove Programs list. This time when I clicked on combofix I was able to run it, but a window titled "Error - Win32 Only" popped up claiming I have an incompatible OS (which I don't). With haxfix, the promised red DOS window appears, but only for a second before it closes itself.
Bleeping computer indeed!
