rootkit.AccessZero! on Win XP, need help!

Hi,

I have gone through a number of threads with rootkit.AccessZero! infection both on this site and the BleepingComputer. So far, I have run the following in
this order:
MBAM
Avenger (see log)
TDSSKILLER
Avira (quaranteed a few files, not sure how to remove those)
ComboFix (see last run's log)

My computer, at the moment appears to operate normally. All the above, with the exception of CombFix and Avira, report no malware.
ComboFix when runs, everytime, poppd up a rootkit.ZeroAccess infection dialog, saying this infection has gotten to the TCP/IP stack and is one particularly difficult one to get rid of. Then reboots and generates a log (see attached).
Would you please tell me:
a) Is it possible combofix finding a false positive?
b) If no, how can I locate/remove this virus? or do I need to reformat/install OS?
PS: Have no network connection issues.

Thanks,
rezz99

 

Hi and welcome to Major Geeks, rezz99!

Most likely, there are still some traces of the rootkit present.

In order for us to check your system of malware it is recommended that you follow this thread: READ & RUN ME FIRST Malware Removal Guide