Hey guys, I recently bought a new MBP. Earlier today, I was browsing the internet when all of a sudden my screen went black. I could see and move the arrow/cursor but the screen was just black. I closed my laptop and opened it but that didn't do anything so I held the power button which made it go to sleep mode and when I hit the power button again, it took me to the login screen. Now this has only happened once but is it something I should be worried about?