I've suddenly started having a problem with my laptop; the screen is blank when I turn it on. The blue LED still turns on, the fan still turns on, but the screen does not. I've tried to hold Ctrl + Esc / Fn + Esc while turning the power on, which does nothing. I've tried connecting it to a TV, which didn't show anything. I've taken the laptop apart, but didn't know how to remove the battery. I tried putting a needle into that pinhole on the underside, which also did nothing. Does anyone have another solution to this?