I think this is probably related to #86551, but that issue was fixed in 3.17/3.18 and my issue is still present in 4.8.0, 4.8.6 and 4.8.7.

When I recently installed Ubuntu 16.10 on a new machine (ASRock Z170 Gaming-ITX/AC S1151 M-ITX Intel Motherboard with Intel Core Skylake Processor i5-6500/3.2 GHz Processor CPU), I got a blank screen on first boot.  Removing "quiet splash" allows it to boot up until the message:

    fb: switching to inteldrmfb from VESA VGA

I can get it to boot with "nomodeset", but then the graphics options are very limited if I start X.  Some websites suggest removing the "vga=" bit of my boot line, but I don't have one to remove so I can't do that.

There is a full dmesg output for a non-nomodeset (blank screen) boot here: http://pastebin.com/HA8SNQJa and a full dmesg output for a nomodeset boot here: http://pastebin.com/gL5bvSXp (these were captured with 4.8.6, but I've noticed no difference with 4.8.7).

There is a lot more information about the various things I have tried (and some configuration files) in this askubuntu.com question (and in one or two of my comments in responses to the answers): 

http://askubuntu.com/questions/845842/intel-skylake-blank-screen-on-ubuntu-16-10/846865

I can obviously post more information as required.