My xbox always has good connection but it now all of a sudden, and when i test the connection it has good connection.

My Xbox 360 is freezing for about 1 minute or less when i start it. It also freezes when i press the guide button and look...

it is possible that the darts that you are using are to large for the chamber and or barrel of the gun.

you may need to clean the dust out of your console with a can of air. if this doesnt work you may either need a new disk drive, disk reader, or have it checked to see if it needs repair

check to see if all the power cables are plugged in properly.

Your console can get dust inside of it and that may be one of the reasons as to of why it is freezing. This happened to my console as well. All you need to do is use a can of air to blow out most of the dust that is inside of your console. This worked for my console.