控制面板－－管理工具－－－服务－－查找 GrayPigeon_Hacker.com.cn禁止这个服务

运行HIJACKTHIS，把下面的选中打上钩，修复
O2 - BHO: QmwDbugt Class - {9D8BCD68-D7CC-3A69-0617-BF5AAD237A2D} - C:\WINDOWS\DOWNLO~1\plgam.dll
O3 - Toolbar: (no name) - {E0E899AB-F487-11D5-8D29-0050BA6940E3} - (no file)
O23 - Service: Kingsoft Personal Firewall Service (KPfwSvc) - Unknown owner - C:\KAV2005\KPfwSvc.EXE (file missing)
O23 - Service: GrayPigeon_Hacker.com.cn - Unknown owner - C:\WINDOWS\admin.exe