If you're not able to install your monitor drivers with the driver pack "Standard Monitor Driver Signed Windows 10 x64 downloaded from ViewSonic website, please follow below instruction to manually install Win10 x64 driver.

1. Download the attached ZIP file including monitor drivers to your PC and extract it.

2. Under "Control Panel", open "Device Manager".

3. Find the Monitor which you want to install/update the driver under "Device Manager" and double click the icon.

4. Go to the "Driver" tag and click the "Update Driver" button.

5. Choose the second option to manually locate driver software.

6. Click "Let me pick from a list of available drivers on my computer".

7. Click on Have Disk...

8. Click "Browse" and navigate to the location where the file was downloaded to, then select the appropriate file and click Open.

9. Click OK, then click Next.

10. Once installation is complete, a confirmation message will appear:

11. The "Device Manager" will reflect the model selected.