Hi, When I push the power button my laptop (samsung r540) starts to boot, immediately goes like into sleep, then starts to turn on again. The screen is off and fans are spinning, connected my other monitor and it shows blank screen. I tried to reseat the connectors. It worked for a bit (I took the HDD out when doing that ) so I shut it off screw everything in. When I turned it on again it showed a Samsung logo, then went to blank screen. Next I shut it off and turned on again, now the screen doesn't even light up. Tried reseating connectors again. I suspect the GPU, it was giving some BSOD's before.