1 - Open IE Explore.
2 - Click “Tools->Internet Options”,Open “Internet Options” panel.
3 - Click “General” tab.
4 - Delete mystartsearch homepage link and set a new homepage link,or click "Use blank".
5 - Click “Settings” button in the “Search” area,open “Manage Add-ons” panel.
6 - Choose mystartsearch and click "Remove",then close “Manage Add-ons” panel.
7 - Click “Apply” or “OK” on “Internet Opens” panel to save the changes.