Disc drive problem

It seems your laser isn't reading the second layer on the games. Regular DVDs have only one layer of information, Xbox 360 games are "Dual Layered" meaning twice as much information in the same area. I would recommend buying a replacement laser from eBay and installing it yourself (as you already know how to take the Xbox apart)

Try to insert a straighten paper pin into the hole under the tray if still no go You have to open the cover and take the cd out.

This is going to be a bit long -- but very detailed, so please read it carefully. There are several reasons that an xbox 360 system will have problem reading discs. The error messages also vary from unreadable disk, no message at all but the game skips, "please insert disc in a 360 console" to "open tray." There are a few reasons this may happen:

1.Bad disc. Check the back of your disc for scratches. If it looks good (or plays fine in another console), then the disc is probably fine. Also-- try more than 1 game to be sure.

2. Bad laser. The XBox 360 has a DVD drive very similar to a PC's DVD drive inside. The drive contains a bunch of parts including a few motors and gears and a laser.The laser is the part that actually reads the disc. The reality is...with all the hours and hours of game play, lasers do eventually wear out. The laser isn't very easy to replace, but it is replaceable. You can find any and all XBox 360 lasers at the following website:

http://store.richspsxparts.com/xb360ac.html

3.Bad DVD Drive. Sometimes other components inside of the DVD drive can become bad such as the motor that spins the disk, the motors that open the tray, etc, etc. You can get a new DVD drive to just replace everything,including the laser, in one shot but there is a catch. The XBOX 360's DVD drive is tied to the motherboard using a software lock.The easiest way to overcome this lock is to buy the exact same manufacture DVD drive that is in your system now, remove the circuit board from the old DVD drive (which contains the software key) and transfer the circuit board into the new DVD drive that you purchase. If you do this simple procedure, there is no flashing involved. The following website carries DVD drives and also provides instructions on swapping the circuit board from the old drive into the new one.

XBox 360 parts: http://store.richspsxparts.com/xb360ac.html

DVD Drive Swap Info: http://store.richspsxparts.com/imnooninxb36.html

A drive that will play DVD movies but not Xbox 360 game discs has been set up incorrectly at the factory. The only solution is to return the Xbox 360 and specifically note the problem so the drive can be repaired or replaced.

This error is caused by not having the original DVD drive in your 360. Only a professional can change your DVD drive successfully. You will need the original DVD drive to fix this problem. Without the original drive your Xbox won't be playing disc based games again. A skilled professional with the original DVD drive should be able to fix your problem.

Are you using copied CD's of Xbox games, Original Xbox 360 would read such copied game discs as normal DVD's and would show a message as "Play DVD"

To play such games it requires the Xbox 360 DVD drive to be flashed, which is called as a Softmod, if you do so you would be banned for playing on Xbox Live and such act is prohibited since it accounts to game piracy

Insert the DVD into the Xbox DVD tray then close the tray.

There's really nothing special you need to do.

if its all games its a drive error, if its only one its the disc, if its a drive error, hopefully youve got warranty, not sure if drives are locked to aconsole i.e. no straight swap from one to another,

Make sure discs are not scratched. Try cleaning the discs using rubbing alcohol and a soft cloth.

this usually happens to bad/damaged/dirty game disks. try cleaning the disks. if that doesn't work, contact microsoft via xbox.com/support.