Have you ever done something that caused you to say "I had a duh moment"?  Well, after I got my new laptop, I was exploring a bit to see how it all worked.  And I had a really "duh moment"!  

I saw this Key that had a 'letter' on it, with another smaller letter, as if it was "squared". Hmm, I thought....wonder what that is.  I initially thought maybe it was a 'squared' thing.  So I hit that key...a few times, lol --and my screen went black, every time.  Now, you probably say, well of course--but not me.  It took me a minute to figure out it actually meant SLEEP!!! Yes, it was a Z...like in "zzzz". So each time I hit that key, I was telling my computer to 'sleep'.   It's also labled "F1"...so obviously, F1 will put your computer to sleep.

 Lesson learned.