I havn't the slightest idea why, but all of sudden, whenever I turn my computer on, a message appears on the screen telling me that there has been an error with Windows Explorer and that it must shut down. Afterwards, the only thing on my screen is the background. I've heard from some people that it's possible to fix this easily, but I just can't figure out how.....and I'd rather not do a complete recovery and lose everything on it.