I am having a problem with my xbox360. a single red light problem and also in game,picture gets blurred and pixels gets stretched....help

If you get the Xbox 360 1 red light message, it means that the problem is either with the DVD drive, or with the hard drive.

Fortunately, the Xbox 360 1 red light message is not something that you should worry about. In order to identify which of the two drives the Xbox 360 1 red light messages is referring to, just look the code number that the screen displays. DVD drive errors are identified with the codes E64, E65 and E66, whereas hard drive errors are identified with codes E67, E69 and E79.

Once you identify which error the Xbox 360 1 red light message is pointing to, fixing it is really easy. The guide available at Fix-xbox360.info will tell you what to do in each case, as well as what to do in case you get any of the other Xbox 360 lights messages. Check it out.