The xbox wont read my guitar hero3 dic, it say that the disc is unreadable

If the guitar hero is new, I recommend taking it to where you purchased it and having it replaced. Tell them it will not play on your brand new XBox. Sometimes, rarely, you can get a defective disc.
Hopefully that will fix your problem. If not, you might look into returning the system for a new one.

Courtesy of Microsoft, here is the way to troubleshoot the problem with the 360 not reading discs:

http://support.microsoft.com/kb/909819

http://www.geekinspired.com/geek-inspired/gaming/how-to-fix-the-unreadable-disc-error-xbox-360/

Keep in mind, try other 360 games as well to determine whether its the game or a problem with the dvd drive itself.

sometime taking apart the xbox and unplugging / replugging the disc drive back in works...

it means the one that wont read is scratched, dirty or defective, my advice is to clean it if its dirty, get a cd repair kit if its scratched or take it back if its defective.

Run a CD/DVD lens cleaner disk and see if that helps you.

If your using the battery pack for the guitar i sugest you take it out and use batteries its been a common problem with the guitar

please rate "

Check the disk. if it has a bis ring arond the disk it is screwed. this is caused by moving the xbox before the disk has stopped spinning.

it could be that your disk is chipped becuz i had same problem and looked at my disk. there wuz a chunk chipped out becuz i flipped the console sideways while disk wuz in and thats only game it wont read

Here is my advice Clean the disk with a disk cleaner and put it in then when it say's disk cannot read click ok and a backround should come up whether it is blue,purple,orange,etc. a screen will pop up...go to setup and it should say cd,dvd,multimedia click on it and there should be a box and you need to click inside and mark it and select ok

sounds like dvd rom m8 try it on another console or try anther rom on yours first b4 buying 1