Hi. I have an Asus Rog Strix GL703G. I tried to fix the keyboard because it was dead due to some failed diode but when I tried to Boot up and measure the diodes I forgot that I Disconnected the LCD cable, so I turned off the machine, plugged the cable, and powered it on again, but since then the laptop turns on, boots into the windows but the power led not turned on and no screen turned on. External monitor works fine and appears Windows. Any idea what can happen? Thanks in advance.