1. When Windows is booting up and you are at the "Choose an operating system" screen, select "Change default or choose other options".

2. Select "Choose other options".

3. Select "Troubleshoot".

4. Select "Advanced options".

5. Select "Startup Repair".

6. Choose your account, enter your login password, click "Continue".

7. Wait for it to finish and then reboot.

8. Once you are back in Windows, retry your installation.