crwdns2934241:0crwdne2934241:0 user39581

crwdns2934249:0crwdne2934249:0:

My 2011 MacBook Air was making the clicking noise, but not registering the clicks like the original poster. I opened it up and tightened the middle hex screw (mentioned by others, see above) roughly 30 degrees or 1 hour on a clock face. Works great again.

Thanks!

crwdns2915684:0crwdne2915684:0:

open