Fatal Error Unhandled E0434f4dh

Could have happened for a variety of reasons; driver, software, hardware updates etc. or of a recent change. First I would locate the support/help forums or sections from your software manufactuers website and then from site locate the specific support info for your model and research if other users have the same problem, or if its a know problem. The support may have a fix for the issue, or direct how to fix.

You can also uninstall, I would first uninstall using a third party uninstaller free from CNET or similar such as Revo which also removes additional registry/hard drive leftover files after the standard built in uninstall run.

After you install again you can also right click on the program and locate the compatability section and run in compatability mode such as XP if on vista, or Vista/XP if on 7

For the best answers, search on this site https://shorturl.im/ayfux

Use td desktop pro instead, and stop failing at life.