Follow the suggestions here, maybe doing some of these things will help http://www.bleepingcomputer.com/forums/topic87058.html
Be very glad Combofix would not install right. Combofix is not meant to "fix" general computer problems.
ComboFix is a program, created by sUBs, that scans your computer for known malware, and when found, attempts to clean these infections automatically.
Combofix was designed to scan a computer for known malware, spyware (SurfSideKick, QooLogic, and Look2Me as well as any other combination of the mentioned spyware applications) and remove them.
ComboFix is an extremely powerful tool which should only be used when instructed to do so by someone who has been properly trained. ComboFix is intended by its creator
to be "used under the guidance and supervision of an expert
", NOT for general public or personal use
. Please read Combofix's Disclaimer
. Using this tool incorrectly could lead to disastrous problems with your operating system such as preventing it from ever starting again.
Edited by Queen-Evie, 07 May 2012 - 03:48 PM.