I have a HP Pavillion x360 laptop and a couple days ago, the screen started randomly going black with several horizontal lines running through it that move across the screen. It does not always happen and sometimes the computer appears to be completely fine for a couple hours and the. Other times it goes blank dozens of times in a few minutes. I noticed that when it is really bad, opening or closing new tabs seems to set it off. Is there anyone that may know what could be wrong?