I know, everyone posting the same problem, but I've read the threads and tried their suggestions. My step-dad has an hp pavilion mx75. I use the DVD rom and it plays my CDs and The Sims 2 with no problems. I've tried playing many different DVDs though and nothing is happening. It does not recognize that a DVD has been put in. I have no idea what it wrong. I'm assuming it doesn't need to be cleaned b/c I play The Sims on it with no problems and played it earlier today and it had no problem reading the disk. Any suggestions?