I am brand new to RasPi. I installed the NOOBS onto an SD card. (formatted using SDFormatter) On boot the NOOBS screen came up on HDMI. I selected Raspbian. After NOOBS installed Raspbian and (I assume) booted the OS there was no HDMI. Now when I boot I do get HDMI until it gets past the screen telling me to push Shift to configure. If I let it go on to boot the OS the HDMI disappears. If I hold shift then HDMI remains active and I get the NOOBS screen.
I have worked through the suggestions on FAQs at http://www.raspberrypi.org/faqs Any other suggestions gratefully accepted.