Adobe Premiere Elements 2022 won't start anymore

In addition to ensuring you have the latest drivers, try launching the program to Run as Administrator.

Do not count on Windows to be fully up to date when it comes to device drivers
Go to the vendor site to be sure you have an updated driver for your graphic adapter

nVidia Driver Downloads https://www.nvidia.com/Download/index.aspx?lang=en-us
-for all Adobe programs use the STUDIO driver, not the GAMING driver
-To achieve the highest level of reliability, Studio Drivers undergo extensive
-testing against multi-app creator workflows and multiple revisions of the top
-creative applications from Adobe to Autodesk and beyond

If you have a laptop you MAY also need to check for a laptop specific nVidia driver
-SOME laptops require an approved driver from the laptop company, not nVidia

AMD/ATI Driver https://www.amd.com/en/support

Intel https://downloadcenter.intel.com/product/211969/Intel-HD-Graphics-Family

reset your preferences, https://helpx.adobe.com/photoshop-elements/kb/preference-file-locations-photoshop-elements.html

Details needed

Mac or Windows and exactly which version of the operating system

What has changed between working and not working

-as in, what have you updated?