Enabling 3d display mode crashed video driver. Restarting video driver enabled 3d mode, crashing video driver.

@Microsoft / @Support  --  I am writing this complaint and solution to help others, but also to inform MS of a major problem with a basic Windows setting that was fairly difficult to fix.  If someone can help make sure that the correct eyes at Microsoft see this, that would be excellent.  Please forgive my unfamiliarity with syntax and which handles would be appropriate for getting the correct attention in these forums.  I'm posting this as a question in a further effort to get the correct eyes on it, but I have a working, but suboptimal solution at the bottom of this post. 

Dear Microsoft:

If the 3d display mode option is set to on in an unsupported display resolution, Windows should revert it to off or shouldn't attempt to actually enable it in said unsupported resolution.  If the option exists for any connected device, Windows should let you turn it off, even when that connected device isn't currently being used as a display.  The option to choose several settings changes before those settings are actually applied was a useful one and the current situation where display settings are changed the instant they're clicked isn't good or helpful.  Additionally, there is a serious problem with inadequate control and Windows being dimwitted about display resolutions, often picking suboptimal refresh rates or opting to scale the display rather than actually change the display resolution. Basically, whoever is most responsible for the display settings window should be given less responsibility and someone better at that job should be put in place to clean up that horrific train wreck. 

The problem at hand:

I accidentally clicked the 3d display mode toggle button in the display settings window while my 3dtv was set to a resolution that Windows considers unsupported for 3d. Instead of simply reporting to me that the display mode wasn't compatible, or reverting the option to 'off,' the system cycled display modes a number of times before stopping the driver for my video card.  

Once the video card driver was stopped, windows reverted to its default video driver which would not allow any change to the display resolution and did not allow disabling the "3d display mode" option.  Restarting the video driver (by disabling, then re-enabling the video card in device manager) resulted in the computer immediately cycling display modes again and stopping the video driver again. There was no way to interact with the display settings windows during the brief period the video driver was running. Restarting the computer was obviously no help,  The problematic setting was set and Windows was not going to unset it.

Switching to a non-3D display allowed the video driver to be started and remain active, but as soon as the 3dtv was selected as a display, the computer attempted to go to 3d display mode at the unsupported resolution again and failed in the same manner.

I tried completely uninstalling & reinstalling the video card's drivers and uninstalling & disconnecting display devices. I tried to find any way to change the 3d display mode setting manually (e.g. in regedit)

I tried doing a system restore (system restore failed for no apparent reason despite trying multiple restore points, perhaps due to a recent Windows feature update that didn't save a restore point after completing). 

**NOTE: Don't delete or change registry entries unless you know exactly what you are doing or are prepared to lose everything and do a clean install of Windows**

I tried deleting anything pertaining to the video display mode settings in HKLM\System\CurrentControlSet\GraphicsDrivers (\Configuration in particular)  

Nothing worked to clear the 3d display mode setting and each time I set windows to use the 3dtv as a display, it tried to revert to the incompatible mode and stopped the video driver.

The solution:

**NOTE: Don't delete or change registry entries unless you know exactly what you are doing or are prepared to lose everything and do a clean install of Windows. The following solution could try to force a display into an unsupported display mode.  I believe all displays will cope with this, but there is a tiny possibility that this could ultimately damage a display device.  EDIT: TRY CK88's APPROACH IN THE REPLIES TO THIS POST BEFORE TRYING THIS ONE**

Ultimately, the only thing I was able to do that worked, was to copy display mode settings in the above registry key from a different display set at a different resolution (one that supported 3d display mode on the 3dtv) to overwrite the appropriate registry values for the 3dtv. It may be difficult to ascertain which are the correct registry keys to use if you've had a number of displays and display modes set up on your PC and haven't already cleared out the Configuration key out of desperation. This also relies on you having another available display device that features a resolution that is both a Windows-supported 3d resolution on the 3d display device and has sufficiently similar specific settings (e.g. stride, video standard, Hsyncfreq.Num/Denom, pixelformat, pixelrate) for the edited display mode to function correctly on the 3d display.

Once this was done, the computer was restarted, the 3d mode enabled correctly and I was then able to turn off 3d mode, and choose my preferred resolution again.