I have a Lenovo Ideapad Yoga 13 laptop from 2012. I have used it since then and it has been fine. Today, when powered on, the screen displays the odd colored stripes shown below. I tried restarting it a few times, it displays the Lenovo startup banner and once was able to run Windows fine for about 1 minute. Then it just shut off by itself. If I plug into an HDMI monitor, no signal. Since the screen displayed fine for a few minutes, I don't think the issue is the screen. Moving the screen around does not seem to help. What would cause this? Any advice on how to troubleshoot? I have built several computers and would have an idea on how to diagnose a PC, but not sure how to diagnose this laptop.