Unfortunately there's very little information you've given us here to help you. A crash like this could be a bad GPU drivers, or it could be something completely different.
Can you open up the Event Viewer (right-click the Windows Start Menu button in the corner), then go to Windows Logs -> Application, and check what kind of Error is being reported there when Dolphin crashes? That might give us some information.
Can you open up the Event Viewer (right-click the Windows Start Menu button in the corner), then go to Windows Logs -> Application, and check what kind of Error is being reported there when Dolphin crashes? That might give us some information.