Yes, you already know the solution. Use the DDU tool to re-install the GPU drivers. Do this in SAFE MODE though.
By the way, DCH drivers cannot be installed over Standard Drivers, and Standard Drivers cannot be installed over DCH Drivers. The choice must be made after a cleaning via DDU.
To check/confirm which display driver type is installed, right-click over the Windows desktop -> select NVIDIA Control Panel -> click on the System Information link on the bottom left hand corner of the NVIDIA Control Panel -> look at text that follows “Driver Type”. You should see one of the following : DCH or Standard, assuming you are able to install the drivers.