These Keys Not Working ???
Try : (Hold) Fn + (Press) NumLock,
or
Try: (Hold) Fn + (Press) F8
Certain keys not working like U I O J K L M and If you try to type them numbers are showed up instead, we all have gone through this problem at least one in our lifetime well old systems weren't that complex but nowadays things are bit wired I' went through the same problem searched on Google too But Nah Nothing Showed up just some people talking about their Mac Book Problems Dude I own a Laptop in which I've installed Windows 10 Illegally, couldn't Find Solution on Quora too, So I just used to restart my pc but nothing worked and I tried to become okay with it haha I was using Screen Keyboard, but that sucked a lot not being able to type fast it was so annoying, so I decided to press all the keys on keyboard pressing them with shift, with control but still nop nothing working and I was ignoring some of the keys because I didn't know their work until then I decided to press them too keys like (pause break) (Fn) here I found my treasure yess I found it the key was Fn + Numlock it took me two hours though but I did it haha, hope I helped you too with my struggle,
Num Lock and its computer history
Keyboards still have vestiges of their origins on typewriters and mechanical calculators. We mostly ignore those in our day-to-day work. The Shift key originally meant to literally raise a set of typebars in a typewriter, merely shifts among the upper and lower case. And you know better than to press Caps Lock when entering passwords—Apple even alerts you when you have it accidentally enabled.
I told related New Year's resolutions to think about
mac911 IBM numpadIDGEarly 84-key IBM keyboards had a numeric keypad that doubled as an arrow and other keys for text-screen-based interactions.
The Num Lock key was a product of the intermediate age, where mechanical and digital met. Some IBM computer keyboards didn’t have separate arrow keys, but they did have a numeric keypad for fast number entry. IBM doubled up: It added a Num Lock key that flipped the numeric keypad to act as arrow keys to move a cursor around a screen-based interface, before computer mouses.
On certain laptops, including older Macs, Num Lock had a different function. Lacking a numeric keypad, Num Lock turned part of the main keyboard into a pseudo-keypad. (There was sometimes a unique Num Lock key, sometimes it doubled with a Clear key and Shift, and sometimes it was a function to invoke, like through F6 on a Mac.)
The pseudo-keypad layout relied on sets of four keys starting with 7, 8, 9, 0 and going down three rows to M. With this mode invoked, you could still type 7, 8, 9, and 0 and have those characters appear, as they’re still mapped to the same position. But U, I, O, P, J, K, l, semicolon, M, command, period, slash take on keypad functions.
