Num Lock On Startup Best Official
The real chaos started with (enabled by default). When you shut down a modern PC, Windows hibernates the kernel. It often saves the last keyboard state, but ignores the BIOS setting. Meanwhile, your BIOS (the firmware that boots the PC) has its own "Num Lock state" setting. These two often conflict.
There are few things in computing as simultaneously trivial and infuriating as the Num Lock key. num lock on startup
Fast forward 40 years. We now have dedicated arrow keys. But the hardware standard never fully died. The real chaos started with (enabled by default)