Ok.  It just shut down again but this time it gave me the blue screen. (Thanks Jim for the tip)) WHEA_UNCORRECTABLE_ERROR

Oh.   And I supsect, but can't confirm, that it may happen with one particular tune open in sonar.  I don't know this for sure.   Here are a couple interesting facts.  Today when I opened the file it would not play at all.  Then it played and was silent.  Even though I had no tracks muted.  I closed it and opened it again, did a little editing-muted parts of some tracks and added some markers-and soon thereafter the crash happened
 

That WHEA error is usually a hardware problem.  I went through everything on mine as I was getting them on a previous home built Z77 motherboard and an i7 3770 CPU.  I ran diagnostics including memtest86 and the Intel CPU diagnostics and they all passed.  Fortunately I had spare components so I "shot gunned" it by replacing parts, one at a time.   I replaced the video (removed the video card and used the internal Intel CPU video) and no change.  I changed memory no change, replaced power supply no change, replaced motherboard no change.  Replaced the CPU with an i5 3550 (what I had) and Bingo the problem went away.  I sent the i7 3770 to Intel as it was still in warranty and they replaced it.  Installed the replacement i7 3770 and it worked without problems until last year when I upgraded (to what is listed in my sig).   
 
I won't say all WHEA error problems are CPU but I worked a WHEA error thread on the tenforums.com and that too turned out to be the CPU. 

Just out of curiosity, what percentage of your C drive is filled?  And have you checked the drive for errors?

Studioguy1
Just out of curiosity, what percentage of your C drive is filled?  And have you checked the drive for errors?

Less than half is full.  I checked for errors and it found none.  

fireberd
That WHEA error is usually a hardware problem.  I went through everything on mine as I was getting them on a previous home built Z77 motherboard and an i7 3770 CPU.  I ran diagnostics including memtest86 and the Intel CPU diagnostics and they all passed.  Fortunately I had spare components so I "shot gunned" it by replacing parts, one at a time.   I replaced the video (removed the video card and used the internal Intel CPU video) and no change.  I changed memory no change, replaced power supply no change, replaced motherboard no change.  Replaced the CPU with an i5 3550 (what I had) and Bingo the problem went away.  I sent the i7 3770 to Intel as it was still in warranty and they replaced it.  Installed the replacement i7 3770 and it worked without problems until last year when I upgraded (to what is listed in my sig).   
 
I won't say all WHEA error problems are CPU but I worked a WHEA error thread on the tenforums.com and that too turned out to be the CPU. 
 
   That is very interesting.  I am using onboard video.    Hmmm I wonder if my i7 is still under warranty.  Looks like 3 years.  So did you just send it to them or did you have to prove it some how?
 

Well.  It just did it while on facebook.  This time it just restarted with no blue screen. (as it was doing before)  Anyway that rules out any sonar problem

Damn.
 
 
 

I had to open a ticket with Intel.  It took a little bit to convince them it was the CPU since the Intel CPU diagnostics did not find any problem, but the fact a new CPU worked OK they (reluctantly) agreed to replace it.  It took over a month to get the replacement.
 
As I noted there are other possibilities but it seems that error is more likely CPU.  
 
Here is the link to the Intel processor tool:
 https://www.intel.com/con...005567/processors.html

Thanks a lot! I will keep you posted