Why doesn't the 'enter' function doesn't work?

the trackpad cursor works but the 'enter function does not.

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0

crwdns2893872:0crwdne2893872:0:

Are you talking about the Return key? What enter function ?

crwdns2893770:0crwdnd2893770:0crwdne2893770:0

no, what I meant was the 'enter' function of the trackpad. cursor works but after that, pushing down does nothing

crwdns2893770:0crwdnd2893770:0crwdne2893770:0

crwdns2892346:0crwdne2892346:0