I have a new laptop: Inspiron 15 5566. When I moved it fast, or sometimes even when I pick it up on one end and it "bends" just a bit, the screen briefly flashes and then Windows crashes and I have to reboot. Sometimes it freezes, sometimes it gives an error and says it needs to reboot.
I've replaced the original hard drive with a new SSD drive, so I don't think it's that.