Game keeps flickering then white screening

letsgolezzies  Did you uninstall and reinstall the driver while your computer was offline?  I ask because the driver you have installed is newer than the one Dell provides, and Windows shouldn't have updated with the Dell driver in place, but it would have certainly done so had it detected that no driver was installed at all.  That could only happen while you were online, of course.  It's also possible that Windows installed this driver anyway despite your having a suitable one in place, which is why I'm wondering.

At any rate, your dxdiag shows new crashes of the graphics driver, unfortunately, so please go through the process again; hopefully the Dell driver will stick this time.  It often doesn't matter which driver you install, but in this case, the newer driver is clearly not functioning the way it should, so the best alternative is to try the only slightly older one from Dell.