Samsung 980 Pro randomly and repeatedly loses it's drive letter and path

[kole848]

-I have bought a Samsung 980 Pro NVMe SSD drive with 250gb capacity two weeks ago. I installed it in my laptop, and even though the drive is PCIe 4.0 (the laptop supporting only 3.0), it has been working perfectly up until now. So, as soon as I bought the drive, I installed it in the laptop, formatted, partitioned and assigned it a drive letter. Then I installed Samsung Magician, updated the firmware and started moving some files onto it and installing software. Anyways, it has been working perfectly, until I booted my laptop yesterday just to see it doesn't recognize the drive anymore! After some researching I noticed that it still exists in disk management but that it has lost it's drive letter, therefore not appearing in Windows Explorer anymore. I just added the letter (:Z) again and all was fixed, the drive was back in Windows Explorer and working again, then I just thought it was some weird glitch. However, it happened again, four times in five days. It's doing it randomly, sometimes after a restart sometimes just after a normal startup. I just entered disk management again and assigned it a letter :Z and fixed it again, but the problem is that this occurs repeatedly with no known cause, because I used my laptop like five times between yesterday and today without the drive disappearing, until now. Does anybody know the cause for this? It's a Zbook 17 G5, i7-8750H cpu, Nvidia Quadro P2000 gpu, 32GB RAM.