Download this zip/rar file
http://www.speedyshare.com/files/28378919/avast6_nogui.zip
extract to your Desktop. Double-click on nogui.reg and reboot windows.
…
Just asking, why do I have to uninstall Combofix? What kind of problems does it have on my PC?
read manual. ;)
http://www.bleepingcomputer.com/combofix/how-to-use-combofix
Combofix is quite tricky and very powerful tool.
For each independent run this tool without the supervision of a trained helper it can lead to crash your systems.
And when we uninstall ComboFix we finish with cleaning.