New
#1
NUM Lock goes on and off by itself in response to unrelated keystrokes
Just got three new Dell PCs - one Precision 3660 Tower and two Optiplex 7000 Towers. Per my orders, all three came with the Dell wireless keyboard and mouse model KM5221W (the box label says KM5221WBKB-US).
On at least two of the PCs and maybe all three, the NUM Lock goes on and off by itself in response to unrelated keystroke combinations. A lot.
For example, CTRL + SHIFT + Esc open Task Manager (correct) but also causes NUM Lock to toggle On or Off (wrong). And many others.
How to fix?
Could it be related to this wireless keyboard? See also my different question at How do Fn Lock on Dell Wireless Keyboard so F1 -F12 keys work normally
Thanks.