I've just bought a new SSD (Samsung EVO 850 250GB) for my Dell XPS 15 (L521x). After I inserted it into my laptop i intalled Windows 10 Home Pro. The installation process happened without any error, the laptop restarted several times (which is normal during the installation) and then booted to the desktop. again, no error whatsover. now, when i try to turn off or reboot my laptop, it is not able to power off automatically (i've waited for over an hour). so i have to power it off forcefully by pressing the power button for several seconds). if i want to reboot the laptop, it gets stuck at the dell logo, the little circle is spinning but nothing else is happening. i have updated all drivers, tried to boot into safe-mode, nothing worked
The current bios version is up to date (A16), SATA operation mode is AHCI, according to Samsung Magician (which i was able to install) everything is configured correctly.
Has anyone an idea what the error might be?