Unplug everything and see if it will reset. If it still won't reset, carefully pull out the wiring and make sure that nothing (including the bare wire in the box) is touching anything else.

Thanks Ron I Did unplug everything and try to reset but nothing happened that's when I push the test button it just clicks. I'm a little leery to take the outlet apart because I don't want to get zapped. Am I supposed to turn off the corresponding breaker first ? I will try it later when I get home.

It could be a failed GFCI receptacle that needs replacement. Since you are worried about getting zapped, that suggests that you don't have the experience to do this safely by yourself. Call an electrician.

Yeah I decided to wait ... I noticed the other outlet in garage has a green light on and this light is out ...does that mean it's a failed GFCI?

Your likely choices are:

1. You have a real ground fault somewhere and the device is doing it's job.
2. The device is broken.
3. The wiring leading up to the device has malfunctioned preventing it from getting power and working properly.

Easy diagnostic tests for each of these, but if you're unable to remove the thing from the wall, you won't be able to do them.

Normally, I'm against just replacing things to see if they are broken, but a lot of GFCI receptacles (especially the cheap-ass stuff builders foist on people) have pretty bad reliability stats.