There is no spare Tcpip.sys on your system so…

Download the following file to your C drive so that you have C:\tcpip.sys
https://dl.dropboxusercontent.com/u/73555776/tcpip.sys

THEN

  1. Close any open browsers.

  2. Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.

  3. Open notepad and copy/paste the text in the quotebox below into it:

FCopy:: c:\tcpip.sys | c:\windows\system32\drivers\tcpip.sys

Save this as CFScript.txt, in the same location as ComboFix.exe

http://img.photobucket.com/albums/v666/sUBs/CFScriptB-4.gif

Refering to the picture above, drag CFScript into ComboFix.exe

When finished, it will produce a log for you at C:\ComboFix.txt which I will require in your next reply.