Yoga pro 9 aura edition

Hello. I occasionally encounter the problem of leaving my laptop to sleep. When I come in and start after a while, it just doesn't start. The keyboard lights up for a second, and then everything goes out again. To make it work, you have to restart your laptop several times while holding the power button. Even after that, the black screen is on and there is no reaction, but after a while, it turns on itself. What could this have to do with?