Razer Blade 14 (2017) - Problem with Black Screen

Hello there, maybe somebody can help me. I've got a Razer Blade 14" (2017) with Windows 10. Since September, the screen turns black very often for no obvious reason. Sometimes the normal screen comes back, sometimes not. Sometimes not even a restart can fix it. After a Google research, I started the laptop in safe mode and unistalled both of the graphic cards (one is a Intel HD Graphics 630 and the other one is a NVIDIA GeForce GTX 1060). After a new start, I updated via the Windows Update page both of the graphic cards driver. After that, the problem was solved for approximately one week. After that, the proclem occurred again. I also tried this whole procedure again, it was okay for a week again, and after that the problem came back again. Since the screen worked for a few days after the described procedure, I think the hardware is okay. Has someone some any tips for solving this issue? Thank you in advance!