OK, so I just booted up Oblivion on my laptop, loaded a file only to discover that the image is just a blank grey screen with only the HUD visible, though I can still move, use my weapons, etc. I closed and restarted the game, I loaded up different files, but nothing changed. I'm not running any mods, and it was working just fine last night, but suddenly this.

Have any of you experienced this before? What's going on?