It wouldn't fix your problem, just interesting for me how good the old OBS algorithms works.
If back to the original problem - you rather need to look at your OS (maybe consider full Reset). If OBS even can't create D3D device - the things is bad. But before you made some destructive changes to your OS try few diagnostic steps. First step is look at the Windows Event Viewer. You are looking for the Windows Logs for "System" log and maybe "Application" log. At the time when OBS launched and terminated there should appear new entries that may have some clues why your OS terminated the OBS program so rapidly.
