[CRASH] Trash Client is Trash

Today I've been encountering an issue that I have never had before.

The client operates fine in every area, including champ select, but as soon as it moves to the loading screen it's fucked. The screen goes entirely black, and then only the upper half is black, with the bottom half of the screen showing my home desktop screen and my taskbar. I've tried everything I could think of to fix this.

I've exited the client completely and then re-opened it and logged back in and tried to return to the game, only to get the same issue. I've restarted my computer. I've ended all League related processes and don't use third party league applications. I've uninstalled and reinstalled. I've gone back to the old client instead of the beta.

I'm pissed. I've gotten five leaver busters, and lost all of my LP that I worked for. This is such trash. I've included an image of what happens.