Paradox2kuk

Hi, Looking for some information on my Toshiba Z30 laptop, This was working fine till I replaced the screen now the screen flickers for a second at start-up but stays blank, The laptop works fine on the HDMI but only if the laptop screen is disconnected from the motherboard, The screen has been tested on my other z30 and works, Could I have maybe fused something on the motherboard? Thanks