Boot DVD for Win10 - how to get - paid Win8.1Pro-updated to Win10

How to get bootable DVD with working Windows 10 OS ?

Windows 8.1 Pro paid to Microsoft and used for a while.

Miscrosoft updated it to Windows 10.

Windows 10 automatic updates "worked" reasoble until 17th of January 2017.

The latest automatic Windows 10 updates failed as follows:
- yes, I can move mouse and see cursor on both two screen
- no, I can not see anything helping, just the famous circle telling nothing
- no, I can not get it restart, reboot, power off/on does not help

I would not want to install Window 8.1 Pro because Windows 10 worked until 17 January 2017! Ub
Can't utilize no restore points!unti)
Thanks in advance for any tips (I write this with Linux)

See this Tutorial
Windows 10 ISO Download

Thanks, I will have a look!

Verified the following: Windows 10 automatic update 17 January did make the workstation unbootable from C: drive which is ok, for example Win 8.1 Pro DVD verified C: drive to be ok; however one can not anymore install Win 8.1 Pro from DVD to a workstation which has Win10 installed in C: at least in our system!

Concluded: after each Win10 update one should create bootable DVD/USB. .. and hope it will boot!

Notes: unable to boot ment in our case that there was NO
ways to access the OS neither with keyboard nor mouse!