Question Samsung 950 PRO (m.2) unstable on ASUS Z170i

Aug 17, 2020
I've used an Samsung 950 PRO (m.2) SSD on ASUS Z170i for a number of years now (windows 10), but lately it started behaving badly. Windows hangs after around 30 seconds after boot. The mouse pointer moves but that's all. When hard resetting it the Samsun 950 Pro is gone and invisible in the BIOS. After disconnecting the power for about 15 seconds and rebooting the Samsung 950 reappears in the BIOS. After that I can boot Windows again but that freezes again after 30 seconds. I've tried every setting in the bios (disables cms, fastboot, etc), but nothing helps.

Any idea? I assume the problem is with the Samsung 950 PRO M.2 memory module, but I'm not totally sure. If so, is there anything I can do?