Keyboard writes wrong letters for wrong keys

[kweho]

the q45c2 brw6n f6x 140*s 6ver the 3azy d6g

the quick brown fox jumps over the lazy dog

The first line is what my laptop keyboard types. The second and this, is what my connected USB keyboard types.

 

[mcnumpty23]

looks like you might need to clean under the keys--all sorts of dust and crumbs and stuff gets under them

try a small paint brush or compressed air

 

[TheGreenMarine]

You have Number lock enabled. Turn off number lock usually by pressing and holding Fn (function) and NumLK (Number lock, which is located usually on the key named "Ins")

 

[jsanthara]

+1 TheGreenMarine

numlock

 

[chimonger]

Qwerty keyboard converted the right-half to being a number/symbol pad? Might this help?

Sometimes, accidentally brushing over the keys triggers the Numlock button...or the cat walking on it...
Keyboards which lack a number keypad, [only has numbers across top line] use the Numlock button to convert almost the whole right side of the board, into a number/symbol pad,.
While in that mode, one can use the Fn button, to toggle between using letters or numbers, or, Fn+shift to get a capitol.
To stop using the right side of the board as a number/symbol pad, press the Numlock button to get the letters back.
All my keyboards, both wired or wireless, which lack their own number pad, only need to have Numlock button clicked, to turn number keypad on or off. IDK about other buttons needed for that.

 

[CountMike]

Windows ?, Which language ? Input language and keyboard layout can be adjusted.

 

[Karsten75]

+1 on the numlock enabled on a laptop keyboard.