My Asus Q550LF crapped out on me. I was browsing when a whole bunch of black rectangles appeared on my screen, about an inch long. I restarted my computer thinking it just froze or something. I could occasionally get to the desktop page if I unplugged the charger but now it doesn't even turn on. It'll make one beep when I push the power button but that's it. What might the issue be and is it gonna be expensive? Because this computer has been one of the worst I have ever owned and I would just scrap it or something if it might end up being costly.