How do I type greek letters on my PC ?
Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings. (If you're using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, click Settings, and then click Change PC settings.)
Tap or click Time and language, and then tap or click Region and language, and then tap or click Add a language.
Browse for the language you want, and then tap or click it to add it to your language list.
To switch between languages, hold the Windows key, and press spacebar.