Full restart of Google Drive
To fully restart Google Drive on a Windows PC:
Press Ctrl - Shift - Esc (on the right side of your keyboard)
In the window that appears, scroll down to Google Drive
Right-click Google Drive and choose "End task"
Repeat for any other entry for Google Drive
Close that window
Click ⊞ > All Apps > Google Drive
Optional:
Optional:
Click ⊞ > All Apps
Right-click Google Drive
Choose "Pin to Start"
Open the start menu again (Click ⊞)
Find Google Drive in the list of icons (not in All Apps) and right-click it
Choose "Move to front"
Google Drive should now appear on the first screen you see when you click ⊞.