I used to be able to play DVD movies on my computer, but without any explanation it stopped working after a while (when the computer was a few months old). The computer recognizes DVD discs when they are inserted into the drive and it can usually ”sort of” play them. Unfortunately there are several problems related to the playing: 1. The pace of both the picture and sound is inaccurate and jerky. 2. Sound and picture are often out of sync. 3. Jerkiness occur repeatedly, but sometimes the movie won’t continue to play at all. The drive tries to spin up, pauses, tries to spin up again – this goes on and on for several minutes and can’t be stopped (the drive won’t eject). When it finally stops and the drive ejects the disc will be burning hot. 4. You never know if/when (and why ) the movie will stop working in the middle. Sometimes the problems are really bad, sometimes not so. At its worst the computer won’t play a disc at all. A disc that won’t play at all one day may at least be somewhat watchable the next. The drive is a combo CD-RW/DVD drive, and I can play CDs and burn CD-RWs without any trouble. The problem doesn't have anything to do with which media player I use, I have tried Windows Media Player, VLC, BSPlayer, PowerDVD, the list goes on... none of them work. It's not the discs that are damaged either, I have tried loads. Surprisingly, to me at least, I can however copy the contents of a DVD disc to my computer using DVD Decrypter. The files are successfully copied to my hard disk, and the movie can be watched from there without the probelms earlier mentioned – no jerkiness etc. My OS is Windows XP Pro. Any help is very appreciated, this problem has been bugging me for months! Thanks in advance!