Keyboard adjusted? CTRL functions set?

Time and again it happens to me that I push a keyboard shortcut on my Lenovo Yoga, which disgusts my keyboard.

Some buttons are broken: delete, y, h

and for others, he wants to do a keyboard shortcut:

z = undo

b = bold (at least in GMX-new email)

i = italic

enter l = link (at least in GMX new e-mail)

I know that's somehow related to CTRL, but I've already tried everything and just restarted the notebook. Would like to know but what I pressed there for a keyboard shortcut and how I can put it back. Who has an idea?

Shift + Fn + WIN

solve the problem, who comes up with that?

Probably your ctrl button also just stuck it can also be that it comes through water

Ah alright then

have only now seen your answer.