How do I replace the power button?

I have dropped my HP Slate 7 tablet. After that, the power button seems to be a bit loose. Has the jack mechanism broken inside? How can i replace it? Are there any other reason for it not switch on anymore?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0