Inspiron 27 7710 AIO, crashing regularly due to Dell Diagnostics

I have a Dell Inspiron 27 7710 AIO which I bought last December. I am running Windows 11. If I am working on the machine on a Monday evening at 17:58:17 I get BSOD crash! It is literally happening same time every week to the second! First time was 30 Jan 2023, but may have been a problem before then, just not working on the PC at that time.

After last week's crash, I ran WhoCrashed (basic version) to look at the dumps and it tells me it is usually a REFERENCE BY POINTER error; though last week (20/2/23) it was NO MORE IRP STACK LOCATIONS. I then made sure that all Windows and DELL Firmware updates had been applied in the hope this would fix any driver errors. But it occurred again tonight. All I think I was running at the time was Chrome and MS Word - pretty basic stuff!

I have put this to Microsoft support and looking at the minidump they advise me that it seems to be DELL Diagnostics that is causing this. They have suggested that I uninstall to see if the problem persists. 

So I tried to uninstall Dell SupportAssist today to see if this will stop the crash tomorrow. And the system BSOD'd on me!

SupportAssist is still showing as an installed app. No matter how many times I run the Microsoft Uninstall it won't disappear, though it hasn't blue screened again.

I reported this to Dell and told it was going to Software support but after four days I have received nothing from them.

Any advice please.