46: WARNING: undefined label: 'troubleshooting-3dview-invalid-selection'
Note the preview is not accurate and warnings may not indicate real issues.
Unsupported Graphics Driver Error
This means your graphics card and driver do not have the minimum required OpenGL 3.3 version needed by Blender.
Installing the latest driver can help upgrade the OpenGL version, though some graphics cards are simply too old to run the latest Blender. Using Blender 2.79 or earlier is the only option then.
Crash on Startup
Try running Blender from the command line, to see if any helpful error messages are printed.
On Windows, graphics drivers can sometimes get corrupted. In this case it can help to uninstall all graphics drivers (there may be multiple from Intel, AMD and Nvidia) and perform a clean installation with drivers from the manufacturer’s website.
Update your graphics drivers (see above).
On laptops, make sure you are using a dedicated GPU (see above).
Try lowering quality settings in Preferences ‣ System ‣ Memory & Limits.
Try undoing settings in your graphics drivers, if you made any changes there.
Wrong Selection in 3D Viewport
See Invalid Selection, Disable Anti-Aliasing.
Running Blender inside a virtual machine is known to have problems when OpenGL drawing calls are forwarded to the host operating system.
To resolve this, configure the system to use PCI passthrough.
To find out which graphics card and driver Blender is using, use Help ‣ Save System Info inside Blender. The OpenGL section will have information about your graphics card, vendor and driver version.