Now I'm breaking stuff - cool!
My HP laptop uses the F12 key to turn Wireless on and off. I'm also using a wireless KB and mouse.
I decided to hit the fn F12 key combination to see what happened. Nothin'
Thinking that the keyboard was reset, I hit the F12 key. Nuthin'
Ok, perhaps the wireless KB is the culprit, removing the receiver and trying again - Nuthin' - or so I thought.
When I looked at my desktop, the icons now had a dotted line box around them. Ok, the Fkey made that appear, try to toggle it off - Nope.
Read about and try icon cache nope.
Read about shortcut arrow and look at the registry - nope.
Reboot, yep
Beats me, but this is a known issue with HP and apparently other laptop mfgrs. This laptop uses a combination Bluetooth and Wifi card. The resolution is to load a different driver for the card. I haven't done this because it's not that important.
And because the information varies - the different driver only affect Airplane mode, or it doesn't do as advertised, or the LED doesn't change to amber when off.
This article references a Mediatek card (mine is Broadcom)
Wireless LED problem in HP laptop: always white (even with Airplane mode on) - withsteps.com
and there is a 19 page thread on the HP forums regarding this issue
Wireless button (f12) not working after windows 8 pro upgrad... - HP Support Forum - 1992999
There are a few pages on EightForums too:
https://www.google.com/search?q=f12...rls=com.microsoft:en-US:IE-Address&gws_rd=ssl
Side note: After I rebooted, the system was a pig doing anything. IT's better now, so I suspect the indexer screwing around with icons, but I don't know for sure.