I ran a quick scan and removed some threats.
After that I rebooted and tried to open the Internet Explorer, but the screen kept saying" The Proxy server isn't responding"
So I checked the proxy settings. I went to Tool> Internet Options > Connection > LAN settings and unclicked the proxy sever checkbox and then clicked OK, closed IE and opened it and found proxy server setting reset itself. I thought my laptop was infected so I 've gone into Regedit and everything seemed to be ok. I ran aquick scan again and nothing was found. My connection is good, nothing else is wrong, all of my other programs are working, I also have Mozilla Firefox and it's running fine, but sometimes I need to use IE. Please help!