Here is how.

#1 Turn your console off. Remove the power cable and leave for about 15 minutes. Once it is completely cool switch it back to on again. This will usually resolve the problem in many cases. If it does not go to step 2.

#2 Turn it off and remove controllers, hard drives and power cables from the unit. Leave it off and then once the unit has powered down and cooled down turn it back on. Do not connect anything expect the power and monitor cable. If it works now it is either the controller or hard rive or other accessory that you have.

#3 If the previous steps haven’t worked you can repair the 360 yourself. You can fix this error with no technical knowledge. All you need is a repair guide that shows you step-by-step how to fix this.

A good repair guide will show you instructions how to do this so you can do a Xbox 360 E73 fix yourself, even if you do not know one end of a screwdriver from another(well maybe you have too). You can do this in less than an hour and get your 360 working again like new.