Hi, my HP Envy x360 m6 is currently stuck on a black screen. The power light is on, solid/not flashing. However, no matter what I do the laptop does not respond. I've tried holding the power button, but no matter how long I've held it, it still shows no response. I have also tried ctrl+alt+delete and various other keyboard tricks, but to no avail. It seems almost as if my laptop has gone into some kind of really deep sleep, in which it does not respond to any input. I'd appreciate if anyone could help me fix this issue, preferably without having to actually open up the laptop and get into its hardware. Thanks.