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Ian Lyons
Community Expert
Community Expert
May 28, 2018

Since you can't start Lr you will need to use the procedure set out in Solution 2 of above inked document (Solution 2: Manually disable the graphics processor). Also, note that the preference file mentioned is for Lr 6. So, look for 'com.adobe.LightroomClassicCC7' instead.

Community Expert
May 28, 2018

Do you have installed the latest version of Lightroom (it's version 7.3.1).

Do you get any error messages?

The first thing you can try is to deactivate the GPU support in Lightroom.

Adobe Lightroom GPU Troubleshooting and FAQ

My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 25H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI