My keyboard is typing more then 1 letter at a time. the on screen keyboard works

[hdk3rae]

er
qwe
aasd
zx
cv

that is what my keyboard is doing when i press a single letter. how do i fix it.
right now i'm using my on screen keyboard

 

[ksiemb]

er
qwe
aasd
zx
cv

that is what my keyboard is doing when i press a single letter. how do i fix it.
right now i'm using my on screen keyboard

PC - p/s2 keyboard ? - try another KB