So I have an Asus x55c that worked fine until one day I try to move the cursor with the pad but it was stuck. Same with the keyboard but the pc was runninh normally. I tried to plug in an external mouse and it would move it but "lagging" a lot. I tried to shut down and turn on the pc but it won't load and it has every time a different problem: it doesn't even light up the screen, it lights it up but only for a black screen or it goes directly to the bios. After waiting a bit it turns on and runs normally for only a few hours and then it starts all over again. Please help me I don't really know what to do