Greetings,
Freezing issue?
Please provide more details about your system
Model number of the 950 m.2
How old is this drive and was it purchased new
Which slot its installed in
What other devices do you have installed and connected (which ports) be specific (storage)
What BIOS revision you are running
What media are you installing from USB stick, etc
How was it created
Unless you have a specific need for Legacy support, CSM should be disabled
This will allow you to use UEFI for the boot device, secure boot after windows is installed and allow you to format GPT (Use shift+F10 and the diskpart command) during install when selecting the target or destination disk.
What I would do:
Verify the integrity of my installation media
Verify your BIOS settings
winload.efi is likely due to an incorrect BIOS setting or corrupt formatting
Boot the install using F12 (select one time boot device) and ensure "UEFI:USBXXX" (example) is selected. If you don't see a UEFI prefix, something is not set correctly in BIOS (assuming you don't need legacy support)
Reinstall the OS
"CLEAN" the drive properly to ensure all residual formatting has been removed (use diskpart)
Format GPT
Answer the above questions and report your progress.
Thanks