BBB not displaying

Hi every one
i have 2 beaglebone black and am using first time beaglebone black and am facing problem to boot the BBB… in the start my BBB do not display any thing from eMMc then i tried to boot from sd card … i write android ,antgstrom and linux on sd card but BBB is not displaying any thing only no signal display on my lcd and am using convertor micro HDMI to normal HDMI nd then HDMI to DVI cable… plz help me out what is problem and how can i solve it and am waiting for its display

Sounds like you messed u the Android install and now the eMMC is messed up. I would put it back.