Win10 Keyboard Language Change
Certain characters on the keyboard are suddenly displaying incorrectly.
When there are multiple languages installed as part of the Windows OS, using the ALT + Left Shift key will allow you to switch between keyboard character sets.
This combination can often interfere with other software products, or may be selected accidentally.
The work around is to simple press the ALT + Left Shift combination until you are back to your normal english keyboard layout.
The more permanent fix is to search for "Region Settings" > "Language"
You can either remove unwanted languages or reset / disable the hot key combination that causes the language change.