Reboot by itself.

Reboot by itself. New Mac user, new comer here, please help! ;-)

I have a MacBook Pro retina for three weeks. It's my first Mac. It just shut itself down while I am using safari, disconnected from charger, but full battery. And it automatically turned on. So what can I do? What can be the problem?i used to have problem with my Mac lock itself while using. And apple asked me to restore the system. After that. I haven had problem until now. It's my first Mac, so I m worried.

Your new machine is still under warranty. Take it to Apple and have them look at it. Reboots can be caused by many things - bad hardware, memory, PS, software, etc.

thanks, so it may be a hardware problem? the thing is that i dont have a nearby apple store, i will need to go sometime next wee, can you offer some trouble shooting ways that may get rid of this?