Philips DVD782CH 5-Disc DVD Player
If you got it as a gift GIVE IT BACK
I've bought some junk electronics before in my time but this is as close to the bottom of the barrel as you can scrape.  Out of the box it wouldn't play ANYTHING, whether it was a regular DVD or any of the two dozen types the manual says it won't support (CD-R, DVD-ROM, et cetera et cetera).  I immediately returned it and got a five-disc Toshiba changer that was the exact same price, and it worked perfectly from the moment I turned the power on.  Philips used to make good smeg, but their motto was wrong about this one: it's NOT getting better all the time.