It's on the last page, page 1-33. For some reason, that short list of codes (and those only) are all prefaced with 0x, making it easy to miss them.

QCode 40 isn't a problem, really - it just means you've recovered from sleep, otherwise it's pretty much equivalent to AA. Odds are your Windows has Fast Startup enabled (it's the default setting, and the Anniversary Update turns it back on even if you had it off previously), which really just converts a full shutdown into a hibernation state. Your shutdowns will take a lot longer but your "boot" will be quicker. It doesn't affect restarts. I personally don't use Fast Startup because I believe in the magical healing powers of the occasional cold boot - if your memory was corrupted in any way during a session, that corruption will be preserved in the hibernation state. I also dislike long shutdowns about as much as I dislike long boots - and the shutdowns, at least on my system, are much longer than a true cold boot usually is.

OK thanks. Yeah I didn't look at the ones that said 0x-

I just upgraded to Anniversary edition so I will need to look at that. I don't like hibernation for just the reasons you list. I want everything fresh and clean when I start.

Would it be OK to use the water pump header for a chassis fan or should I get an extension cable to take it all the way to the chassis fan headers at the bottom of the case?

Yes, you can use the water pump header for a chassis fan.

OK thanks. I laready orderd a fan extension cable since they were so cheap. It wound up being one of the GPU fans as opposed to the chassis fan that was making the noise.
Somehow the fan had been turned off in the software so it was only turning on when the GPU temp hit its limit. Hopefully I now have that fixed.