This will walk you through trying to turn up your laser in your 360 dvd drive.
Do not do this fix the first time your 360 wont read a backup.(or the 2nd,3rd,4th or 5th)This fix is the last thing you should try.It can very well burn your laser out

There is a good chance that even if this fixes your drive it will only work for awhile before you will need to try it again.Before long there will nothing left and it will die.
Do not try this if you don't have a good understanding of what you are doing and the tools you need.
You have been warned
All that being said this is a good fix and was a very GOOD post by Freebeer187
Thank you FreeBeer187
CoFree