I am running kali on an old dell inspiron machine and it works and runs like a dream and has recently updated to the 3.18 kernel which has some graphical changes including the boot screen and desktop background. I also run Kali on a brand new HP stream which doesnt work or run so well... I think upgrading this machine to the 3.18 (currently 3.14) would solve a few issues but I have no idea how to do this, ive ran apt-get update and upgrade dist-upgrade, used the graphical software update from the menu and searched google and these forums to no avail, Iv e tried various kernel update commands all of which respond with not found ect. Any help at all on this subject would be great