Screen flashes blue and then goes dark.

[xalius]

Hi, which image have you on your sdcard (please link) and with which tool did you write the card? For the flat flex connectors it is important to note that the contact surfaces on the cable have to face the contacts in the connectors, check if thats the case and the cable is not inserted upside-down. If you use Android, make sure you have the image with LCD support and not the HDMI version. For Linux there is no LCD support yet in any of the images afaik...