I only noticed the problem today while attempting a reinstall of Win 10. Prior to that I used an external keyboard and mouse.
The problem has the following symptoms:
Keyboard only types if Caps lock is ON. (All letters are capitalized)
If I hold down SHIFT, I can type in lowercase.
If I press...
I just realized that I haven't actually know my laptop's m.2 support. By having an intention to buy XPG SX8200 Pro, I forgot to check my m.2 slot support 3x2 or 3x4. As, I did found some results that if the 'key' is M and it would be PCIE 3x4...