Hi, thanks for the instructions. My apologies for the delay; health issues are taking priority.
I was able to turn off the fast start using the TenForums tutorial you linked. After doing this, when I shutdown my computer I got a "getting windows ready" screen and ending up leaving the computer to complete the shutdown overnight.
I use ESET Internet Security; I could not find anywhere there to follow your instructions to "allow list(s)/trust list(s)/exclusion list(s) particularly for any of its real-time protection components " and of course not being able to start Malwarebytes I couldn't "add Your AV 's program folder(s) (likely located under C:\Program Files and/or C:\Program Files (x86)) to Malwarebytes' Allow List".
On starting the computer this morning, I found the Malwarebytes Realtime Protection icon in my System Tray (hidden icons). I then found that I could start Malwarebytes normally. It was still showing v4.4.8. I then did a check for updates and Malwarebytes was updated to v 4.4.10 with the prompt to turn on the recently added Brute Force Protection option.
I have not proceeded with the uninstall/reinstall with the Support Tool at this stage.
As Malwarebytes appears to be behaving normally now, should I leave it as is or should I still do the uninstall/reinstall?