Hi, I was trying to take an old laptop with the screen cracked (it still worked) and a broken keyboard, and transform it into a desktop PC, I made the case and everything, yesterday I was finally installing windows on the PC, I uninstalled the cracked monitor and when I reinstalled it later I heard a pop (like a spark) and the display wouldn't turn on. The PC still works, but when I connect it to an external monitor even with the display plugged off it doesn't work. My laptop is HP so I've tried using FN + F4, also tried closing the cracked display, nothing really works. I give up, would like some help because i spent 60$ on this PC and I don't want to lose it... Thanks!