1. Open and log in to the operating system in the lower left corner. Click Select Settings on the Start menu.

2. Select Update and Security on the Windows Settings page.

3. On the Update and Security page, select the "Restore" tab on the left, and then restart immediately on the right.

4. Select Troubleshooting on the new startup page, and select advanced options in Troubleshooting.

On the Advanced Options page, select Start Settings, and then select Restart.

6. After the system restarts, press "7" or "F7" on the startup settings page to choose to disable the driver's mandatory signature.