运行regedit，删除下列值：
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
<BIE><Rundll32 C:\WINDOWS\DOWNLO~1\BDPlugin.dll,Rundll32> []
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks]
<{BC207F7D-3E63-4ACA-99B5-FB5F8428200C}><C:\WINDOWS\DOWNLO~1\BDPlugin.dll> []
<{36CD708B-6077-4C02-9377-D73EAA495A0F}><C:\WINDOWS\WinHttp.dll> [Microsoft Corporation]
[BDHlprObj Class]
{CA92B524-BC8A-4610-BD2C-6BD3E28155D0} <C:\WINDOWS\DOWNLO~1\BDHelper.dll, >
哭啊，这些我一个都没找到，都找遍了的。。。
