how to correct my keybord letters

Solution
Check your regional settings in the OS you're using. Z/Y swap is on eg German keyboard layouts, but there are also a lot of other keys being remapped.
It could be also a prank, with custom keyboard layout (Microsoft do provide a tool for that).
Check your regional settings in the OS you're using. Z/Y swap is on eg German keyboard layouts, but there are also a lot of other keys being remapped.
It could be also a prank, with custom keyboard layout (Microsoft do provide a tool for that).
 
Solution