then you will need to uninstall Avast and do a clean install:
  1. Save a copy of Avast and save it to your HDD:
    http://www.avast.com/download-software
  2. Download the Avast Uninstall Utility http://files.avast.com/files/eng/aswclear6.exe and save it to your HDD.
  3. Disconnect from the Internet at this time.
  4. Go to Control Panel and uninstall Avast through Add/Remove Programs if possible and reboot.
  5. If Step 4 fails, boot into Safe Mode (hit F8 repeatedly) and run the Avast Uninstall Tool. If you had previous versions or products of Avast on your machine, you can uninstall and reboot each one at this time.
  6. Reboot.
  7. Install the newest version of Avast and reboot.
  8. Get Internet access and register your copy or add the license key for Free:
    Free – http://www.avast.com/registration-free-antivirus.php
  9. Update the Avast definitions.

Let us know if this fixes your problem. Thank you.
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thank alot

this one work ^^

btw step 4 didnt work so i did step 5 and its work

big sorry for uploading to imgshack

thanks for helping man

god bless .