I suggest an installation from scratch:
1. Download the latest version of
avast! Uninstall Utility and save it.
2. Download the latest
avast! version and save it.
3. Uninstall avast from Control Panel (if possible). If, for any reason, you can't run it, try booting in
Safe Mode and doing it from there. Anyway, boot after that.
4. Run the avast! Uninstall Utility saved on 1. If, for any reason, you can't run it, try booting in
Safe Mode and doing it from there. Anyway, boot after you've run it.
5. Install avast! using the setup saved on 2. Boot.
6. Register your free copy or add the license key for Pro.
7. Check and post the results.
Then clean your pc. I suggest:
1. Clean your temporary files.
2. Schedule a boot time scanning with avast with archive scanning turned on. If avast does not detect it, you can try
DrWeb CureIT! instead.
3. Use
MBAM (or
SUPERantispyware or even
Spyware Terminator) to scan for spywares and trojans. If any infection is detected, it is better and safer to send the infected file(s) to quarantine (Chest), rather than simply deleting them.
4. Test your machine with
anti-rootkit applications. I suggest
avast! antirootkit or
Trend Micro RootkitBuster.
5. Make a
HijackThis log to post here or
this analysis site. Or even submit the
RunScanner log to to on-line analysis.
6. Clean your Hosts file (replacing it) with
HostsMan tool.
7. Disable System Restore and then reenable it again.
8. Immunize your system with
SpywareBlaster.
9. Check if you have insecure applications with
Secunia Software Inspector.
