WordPress4.1.15 Dashboard links not working

It could be that your upgrade hasn’t worked properly. Does it still think you have an upgrade to 4.7.2 waiting?
Personally I would download a fresh copy of 4.7.2 and re-upload this to be sure nothing is broken or missing. Make sure to take a backup of your database and files should anything bad happen.

This may be helpful: https://codex.wordpress.org/Upgrading_WordPress_Extended