When installing windows 10, I let windows install the necessary drivers and run windows update until fully updated to 1803, then install the Realtek audio driver and update the Nvidia driver. Go to the Nvidia site and download the driver., Device Manager should show no signs of missing drivers.
http://www.nvidia.co.uk/download/driverResults.aspx/135813/en-ukHave you enabled XMP or set the ram manually? If you haven't already, try at default settings. If that doesn't help, leave at default settings when reinstalling windows.
It's possible one stick of ram isn't causing the freezing but I'd still get a kit of two sticks in there. I'm using two sticks of Kingston HyperX Predator with no issues so let's hope it's just instability or a windows problem.
Microsoft stopped the windows 10 free upgrade a little while ago, if you have the windows 10 license key, try the "Download tool now" instead of Rufus.
https://www.microsoft.com/en-us/software-download/windows10Before installing windows disconnect the HDD. In the bios on the Boot tab, I disable CSM and set Secure Boot to Other Os, then Boot Option 1 select the installation media with UEFI in front of it. F10 and Enter.
After windows installs, Boot option 1 should show "Windows Boot Manager" with your ssd, this means you've done a UEFI install, then connect your HDD.