All of a sudden I don't have any sound and internal sound is not an option listed in sound preferences. I had boom2 installed and found a way to uninstall that as I read it may be the problem. Also uninstalled cleanmymac as I read that could also be the cause. Have done a backup and a complete reinstall of OS, still no internal sound option. Tried toothpick in sound jack and also vacuum to suck out anything that might be in there. Tried speaker jack in and out a few times. Tried reboot without wifi and bluetooth. Trie the audio midi install but don't have internal sound as an option. Nothing works!!