Why won't my Xbox 360 turn off?

Why won't my xbox 360 turn on if my cords are plugged in and my power box light is orange?

• I'm not sure if this has anything to do with it but a few days ago, my power box light went red on me and I couldn't turn the xbox on. I unplugged the cord from the outlet and let it sit for a few minutes and plugged it back in and everything was fine. Today, it went red again and I had to call microsoft for help and then while I was on the phone, my buddy wiggled the cord a bit and it fixed itself and I could turn it on again. so I turned it off cause I didnt feel like playing and now a few hours later, I go to turn it on again and it won't come on but the light on the power box is orange, like it should be? There was a power outage last night but if the light on the box isn't red, it should turn on just fine. New power cord? New xbox 360? both?

• Answer:

  I would get a new power cord and it that doesn't work then send it to Microsoft for repair or ask for another if you have a warranty. New cord possibly cost about $15 +