StandAlone bootin

hi …I’m trying to boot my BBB REVA5C in standalone mode.
Power supplied by usb.
when power on, i can see BeagleBone logo on my monitor… but after few second i have a black screen and nothing else happen after that.

tks for your help.

Why not just go here and see if that helps.

http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI

Gerald