Wanna help me out? Know anything about DVD recorders?

Got a Toshiba D-VR660 that does not eject or play a dvd. I seem to be locked out of quite a few other functions as well, seems all I can do is change channels. Worse yet, it's my mother's VCR/DVD recorder, she's lost the manual, and all she wants to do is button mash. She's taken the remote away from me twice to do more button mashing. It there some means of just completely resetting this machine back to the day it was new?