2. Locate the display adapter in Device Manager and expand it.

3. Right-click the graphics card whose digital signature needs to be disabled, and then select Properties.

4. In the Properties dialog box, switch to the Details tab.

5. Select the hardware ID from the drop-down list.

6. Copy the ID to Notepad or other text editor for later use.

7. On the startup settings screen, press F7 or choose to disable driver signature enforcement.