2011 iMac - Shutting down randomly.

[PsstGreek]

Could use some help here guys.

I have my one year old 2011 iMac and for some reason it's shutting down randomly. I have no clue as to why it's doing this. The screen just goes dark and the iMac powers off. I hit the power button, the iMac turns on like nothing happened.

What could it be?

 

[Commy1]

Had this issue with my iMac, but it was only after I failed to install Windows in Bootcamp. I did a complete wipe and reinstall of OSX, it shut down only once after that unexpectedly. Thus far, about a week later it's just fine.

 

[Weaselboy]

Try running the Apple Hardware Test and see what that tells you.