Two Monitors on Windows: Set It Up Once, Properly
The mouse leaving by the wrong edge and the text being a different size are both settings. Four of them, and Microsoft only documents one.

Pick your device to see every fix in one place.
The mouse leaving by the wrong edge and the text being a different size are both settings. Four of them, and Microsoft only documents one.
Windows 11 has a discovery setting that hides most devices by default. That is the commonest reason yours never appears in the list.
The number at the end of the message is the useful part. Microsoft publishes what each one means, and the internal names are plainer.
Windows fetches the installer from the vendor with one command, and no search results are involved at any point.
One line names the last time your machine really booted. On a PC switched off nightly, the date is often days old.
Microsoft has been retiring them for three years. Nine moved to Get Help, the rest were removed, and Windows 10 kept all of them.
The beep is documented, the shortcut is armed by default, and turning the feature off is not the same as disarming it.
Microsoft recommends it for advanced users only, and says so on the page. When that applies to you, and when it does not.
One switch is on by default and it sets your default to whatever you printed to last. Plus the case where turning it off is not enough.
Three buttons on one official page, doing three different jobs. Picking the wrong one costs you an evening.