Since i upgraded to avast! Internet Security, there is no contact to my keyboard , i got the below answer but it does not help, need support ASAP as i use my PC all day
Try to find out which shield (or Firewall) makes the connection fail, if any:
You can access individual shields via the main avast! interface, Settings - Active Protection - stop one shield, try reconnecting the keyboard, see for the result, re-enable the shield and move on to the next one. At the end try the same procedure for avast! Firewall, if you have it in your antivirus version.
Thanks
radartal