It's possible that your language settings are incorrect, causing the OS to interpret the keys in a different language format. Go to your Start Menu and type "Control Panel" which should bring up search results on the right side of your screen. Click on Control Panel at the top of the list, and select the Region option once it opens. Verify that your region is set correctly and click Ok if you make any changes.
Let me know if this doesn't resolve your issue, and we can check a few other similar settings, and if that doesn't work we can try some things to test your keyboard itself.