Start with unplugging the article from the electrical power socket. It is wise to use hand gloves in making repairs of electrical articles and especially the Xbox. The primary reason of malfunctioning of this gadget happens to be the accumulation of dirt on the lens. It could be identified if you had found the picture freezing or disrupting the loading process, it is just like cleaning the normal DVD.
Usually, the console would resume normal service after this cleaning process of lens. If it continues to show problems, you need to look into the machine to find out the actual trouble. You have to open the machine to check for torn wires inside it. Torn wire from the main cable is to be stripped from both ends of the damaged area and should be soldered or attached with proper covering of electrical tapes to prevent short-circuit problem. You can do the same thing to any other cable if that is found damaged.
Check out for any torn wire and connect them properly. Some of the control button may have turned sticky due to continuous use. Open the screws from the back and get those buttons cleaned in solutions of soap and tepid water and dry them before putting them back to their original places. Once you complete the preliminary repair work of the console by examination and restoration process, it should hopefully run in normal way.
If the problems are not particularly major, the console should function in a regular manner with the actions that you have taken following the Xbox repair guide. Check the warranty period of the machine and take advantage of the same. Otherwise, you have to call on a skilled technician to repair the Xbox to make the machine working again. It is better that you make it certain to study the Xbox repair guide to avoid dependence on others.