I AM ABOUT TO SMASH MY DVD PLAYER!!!!!!!!!!!!

Does that disc work on other players? Do other discs work on your player?

If you tell us more about the player, the disc, and what happens when you try to play the disc, we'll be able to make better guesses about what the problem is. Can you play other discs? Does that disc work in other players?

Not having specifics, here are some ideas, in the order in which they popped into my head:
1) That's a Blu-Ray disc and you have a DVD player.
2) The disc is dirty. Take a wet cloth (or paper towel), put a little dish soap on it, and gently swipe the shiny side of the disc from the center of the disc to the edge (don't wipe the cloth around and around the disc). Rinse the disc with cold water. Wipe with a soap-free wet cloth. Rinse again. Wipe with a dry cloth (or paper towel).
3) The disc is scratched. Some players handle scratched discs better than others. There isn't much you can do here. There are kits that can repair some scratches, but the kits aren't free, and they don't work a lot of the time.
4) You are putting the disc in upside-down. The side with the printing on it has to face up.
5) Your DVD player is dirty. Open the disc tray and blow as hard as you can into the player. Try not to blow any spittle into the player.
6) Your DVD player is broken.
7) Your disc is NTSC (Japan/US) and your player is PAL/SECAM (the rest of the world). Or vice versa.
8) There is some thing about region codes which is some kind of copyright protection scheme that means not all discs will work with all players.
9) Your disc is a CD, not a DVD. (I think most DVD players can play CDs, though.)
10) Your disc is DVD-ROM, meant to be used in a computer.

From the description the pladder motor is bad, " disc spins on" or it is missing the 5 volts that drives the motor. The laser pickup that pops up and down appears to be working fine.

that is the laser lens , it is dirty,
you will have to cleaned use a q tips with wood alcool
dont aply to much pressure on it while wiping it
its should works if it not
that is the laser it self replaced the laser assembly
hope that will help
regards Alan

The exact model of DVD player matters. Not all models can play a Computer burned disc.
There are several types of DVD
A factory type DVD in DVD format
A burned movie in MPEG format
a burned disc in DivX format.
Etc.
Try burning the disc with a DVD Creator program, not just 'Burn to DVD'. It's not the same thing.

Hi
You might not be putting the disk in the right way? It happens with me sometimes but then I remember to make sure to face the disk the right way!!! Try it ; should work!

Kay what happens with some players is that they are only bulit to play a certain kind of disc. It also may be because the player is old. If you buy a new player it will be able to play all DVD's that you put in it.

There is no simple "at home" solution to any of these problems listed. However, Since it tries to play or at-least plays Cd's, then that will indicate that affordable repair is possible. I have already repaired several of the Dual units already. With the 7" Dual screen sets, I had to replace the laser assembly or the spinner motor (not spinning fast enough). With the 8" Dual Screen sets, I found mostly that the laser ribbon was binding up in the movement of the laser and preventing it to move to proper position. These repairs should be done by a qualified technician.

uncompatable disk?if not try cleaning the lens of the player by using a cd/dvd lens cleaner...the cd thing with the two brushes stuck onto it...with some cleaning fluid

get a dvd cleaner from best buy. mine did the same thing, it would not play any dvds so i resorted to vhs, and once i had watched all of those, i finally got a dvd cleaner and now it works fine

Me three, same thing, reads 'no disc' or just won't play it. I have found that it happens more frequently on rental DVD's and that running a cleaner cd through several times helps but eventually that will even stop working. No idea what the problem is