my xbox360 power button is green and flashing what should i do :(

ok when i turn it on it cant read the disk and the power button is flashing green and when it work i can only play for like 10 minuets help!!!!!!!!!!!!!!!
um its has a game in it and the controllers

Red and green power stars on super mario galaxy?

I just got the game, and i’m a little confused. I heard there is red and green power stars, but how many, and how do you get them?
Also, for hidden stars, i’ve already have two. Is there a hidden star in each galaxy, or each mission, or what? And once you find a hidden star on a mission do you have to go back and replay the normal mission to get that star too?
Also how do you play purple coin missions?
Sorry this is a lot of questions but if you could answer any of these that would be great!

Xbox360 with three red rings but green power brick light?

My xbox360 froze up in the middle of a game. I restarted it and it had 3 rings but the power brick light was green.

playstation 3 woundn’t start. push the power button, blinks green then yellow and back to blinking red. ?

can’t get game to eject either, same problem. turns system on to blinking green light, then yellow followed by a beap and then blinking red. any help.

What are some good ‘GREEN’ stocks to get into??

solar power
hydroelectric
wind

anything profitable, this is for a game btw