Macbook keeps turning off when going to sleep?

[JoyJoy]

Whenever I shut my laptop or it goes to sleep, it has to restart, it cannot just wake up again and I have no idea why. The little light at the bottom stays on like normal but it just keeps restarting. I looked through all the system preferences and it didn't help at all. Any suggestions?

 

[MarkMS]

Do you have anything connected to the MacBook when you close it? (i.e., External USB hard drives or displays)

 

[JoyJoy]

No nothing connected. It happens too when it just falls asleep after being inactive for awhile

 

[ant-macyourself]

Does the same thing occur when you create a new user account and put the computer to sleep from there? That would help narrow the problem down to something potentially being corrupt.