...even though I've installed the dgVoodoo files as directed in the past. This always worked for the other ND games, but I'm trying Ghost of Thornton Hall and not having any success. Anything else I can do? I downloaded the game from BigFish Games.

Never mind. I reinstalled one of the .dll files and it works now.

I had to uninstall and reinstall the app and then reinstall the game. Now I can't get it to stop flickering. I tried the DGVoodoo .dll files again. It worked last time but not now. Help!

Which ND game is this? Are you installing from a disk or a download? Are you trying to play on your new Windows 11 computer? Have you tried compatibility mode with XP?

Nancy Drew Fix Screen Flickering on Laptops Running Windows 11
To fix the screen flickering issue with Nancy Drew games on laptops running Windows 11, you can try the following methods:

Use dgVoodoo2: Download and extract the dgVoodoo2 files, copy the necessary .dll files into the game install folder, and run the game to see if the flickering stops.

DXVK: Convert DirectX 9 to Vulkan by downloading and extracting DXVK files, copying the d3d9.dll file into the game install folder, and checking if the flickering stops.

Nvidia Control Panel: Add the game's executable file to the Nvidia Control Panel, manage 3D settings, and select the high-performance Nvidia processor or your discrete graphics card to apply the changes.

If these methods do not resolve the issue, consider using compatibility mode to run the game on an older operating system like Windows 7 or Windows XP (Service Pack 3).

Her Interactive
Game Screen Flickers or Flashes - Her Interactive
If the game screen flashes off and on, flickers, or characters appear and flicker in front of the game screen, it means the currently installed video card driver may not fully support the game. https://www.herinteractive.com › game-screen-flickers-or-flashes

I am not really sure what to suggest now. There may be a slightly different procedure depending upon whether the game is from a CD, Big Fish, or Steam.

I found a thread on Reddit here where there are some links and suggestions to get the game running.

I have several Kheops games from Big Fish, the ones that have the flickering problem with NVIDIA cards, and I did manage to get those to work with the stickied solution in this forum.

I found another thread about this online and it suggested changing the compatibility. I changed it to Windows 7 and it works now....along with the .dll that I left in the folder.

Good news, Melia. Thanks for letting us know.

Yup, that was one of the recommendation in my post if nothing else worked! Glad you got it working!