Here’s how that “feature” is enabled or disabled.
Obviously this isn’t terribly useful, which is exactly what makes it a Stupid Geek Trick.
Either way, it’s a good learning experience to better understand how your OS works.
Lets start by opening the Start Menu, pop in regedit then hit Enter.
(The registry entry’s data will be “0” by default.
In the screenshot below, we’ve already changed it to “1”.)
A dialog will pop-up, change the Value Data field to 1.
Now restart and youll see your Windows version printed on the desktop.
It’s pointless but interesting.
If you want to remove the watermark, just change the Value Data field back to 0 for disabled.