1070Ti 3DMark Error

[texasseidel]

When I use 3DMark with my 1070Ti it gives me an error saying

"Invalid video mode.
The resolution and color depth you have selected do not appear to be valid for hardware acceleration.
Please ensure that the correct monitor drivers are installed.
Also ensure that the most recent video drivers for your graphics adapter are properly installed.
This error can also occur if your monitor is in portrait mode"

[David (PassMark)]

The error message is largely self explanatory.
First steps are to ensure that the correct monitor drivers are installed & also ensure that the most recent video drivers for your graphics adapter are properly installed.