1. control panel -> programs -> program and features
找到所谓的hao123 or whatever, high light it, right click,
a "uninstall" will popup, OK.
This is a clean remove
2. if that doesn't work, go to C:\Program Files or C:\Program Files (x86)
find the hao123 or whatever folder, and find an uninstall.exe or
similar file, double click it.
This should be a clean remove
3. if that doesn't work, go to C:\Program Files or C:\Program Files (x86)
find the hao123 or whatever folder, delete the whole folder.
This is not a clean remove, some hidden stuff will remain.
3. Go to your IE or Chrome, reset the default home page.