Slarty,
Like I said in my first post, I could see if a dash or some other character made it finnicky, but underscores are part and parcel of filenames. And even still, if I had to surround every...

Fifty bucks for what should be really basic Windows functionality.... :X (yes, I see there's a lite version, but it doesn't even have indexing which is almost essential for a functional everyday...

Consider an example directory containing:
IMG_0209.JPG
IMG_0210.JPG
Some_PDF-numKK.pdf

If I want to find the pdf, and happen to remember that it had "numKK" in the filename, I might reasonably...

What wireless card do you have in your laptop? I upgraded mine to the Intel AC-7265 (at the time of purchase Dell was only offering the Dell 1560 for factory wireless options).

Do either of you have desktops on the same windows account? Or just multiple computers period?

Update to the update: It started happening again yesterday. I just had to say something....

Just an update:

I haven't had this happen since making the "uncheck allow to shut off" option you mentioned in your first post.

I have been having the same problem over the last week or so, same computer as well (Intel AC 7265 and clean install of Windows 10 Pro after I bought the computer). How do I check the build I'm on? ...