Looks like you ran almost all the correct av programs.
1. Did you try a System Restore?
2. Did you boot into Safe Mode with Networking and run Rkill first
before running any AV program? After each reboot Rkill must be run again.
3. Did you try running Task Manager (Ctrl-Alt-Del) and check under processes for anything suspicious like Click Check running? If you find something suspicious running End the process.
After running Rkill, run TDSSkiller, then MBAM, then HitmanPro, then Combofix. Then run HijackThis and post the log here or copy and paste the log here http://www.hijackthis.de/
and click on Analyze.
If all this does not work you can try manually removing Click Check. Do a search of your local drives for Click Check and delete any files it finds. Run Ccleaner. Backup your registry file. Open your registry file, regedit.exe, under Edit, Find, type in Click Check, Find Next, right click on entries, Delete, hit F3, and repeat until all Click Check entries are deleted.