Well I've got GOOOD news!
I've solved both the crashing and the floppy issue!
Here's the deal:
1- I disabled the floppy in the BIOS (though that doesn't speak to WHY screensets were making it turn on/off/click). Not a problem anymore at least!
2- I FORGOT that i had installed RealVNC on my DAW (but I actually don't use it so I forgot it was there) which also installs a dispaly "mirror driver".
Once I uninstalled RealVNC I was able to switch screensets rapidly and constantly for quite awhile without a single crash!
And changing screensets happens quickly now too.
WHEW - I feel like I can at least move forward now and get to know X1 (I actually do know a bunch already hehe).
I'm happy to report this progress and hope it may help others!
Thanks for the feedback from those who provided it - including Seth who was kind enough to help in PM!