Recently, my Avast antivirus upgraded from version 7 to version 8. I have some internet connection problem (internet connection problem has nothing to do with Avast antivirus), so I decided to uninstall the antivirus program to see whether or not it is causing the connection problem. When I restarted my laptop, I found out that my keyboard and touch pad are not working. I opened Device Manager and it shows that there is a problem with the registry. May I know what can I do to fix it?