Your computer is infected with a virus! Use the official Microsoft Windows Malicious Software Removal Tool:
Press Win-R on your keyboard.
Type MRT and press Enter to open the Microsoft Windows Malicious Software Removal Tool.
Click Yes when prompted.
Click Next to continue.
Select the third bullet, Customized Scan
Click the Choose folder button.
Press Ctrl-L to focus the address bar.
Press Ctrl-V to paste our configuration
Press Enter to submit