I've got a PI3 and it has Rasbian (Latest version) on it and also OSMC with noobs.
I'm not sure how you have done this on a single sd card...I was unaware that you could do multiple OS boots from one card. Try it with a fresh install of Raspbian alone on the sd card. See if that doesn't fix your HDMI issues.
If you need to run osmc, run it on its own sd card. Noobs should just go away when you use it to install an OS. If you do use Noobs for the installation, do not forget to click on the language selection in the panel at the bottom of the page.