Windows 10: Win10 cannot login: black screen and spinning blue circle cursor after boot

Can anyone help me avoid a reinstall?

• System is running Win10 1903 originally installed on 1709 and was suspended by last user
• System boots OK, I see the blue Windows logo then the screen goes black, with a twitching spinning blue circle cursor which tracks the mouse
  It's twitching as though it's doing something more than just spinning - no login screen appears
  
• I've tried the Windows+Ctrl+Shift+B to restart the display driver, the screen briefly stops showing the cursor
• It does not respond to any other keypresses including ctrl-alt-del
• It's a VM running inside VMware player on Linux so no monitor connections to check
  
• It does this in safe mode as well as normal boot
• I never see any error messages on screen
• If I try RDP then the screen opens for a second, briefly shows a spinning circle and then the RDP closes again
• I've tried all the repair options inside the advanced boot options and on a 1903 DVD image, none find anything wrong, none are able to roll back at all
  
• I've tried various combinations bootrec, chkdsk and sfc, none found anything wrong
• I've tried an in place reinstall but that won't work because it can't be run from a running system
• If I mount the virtual HDD in a different system I can see that logonui.exe is creating a crash report about every 4 seconds which I guess explains the twitching cursor, the contents of one are pasted below
• LogonUI.exe is the same size as that on a functioning system so I guess there is no need to restore it from anywhere

The only documented step I can find now is a complete nuke and start again after preserving my data elsewhere, surely there has to be a way to find out what is causing logonui.exe to keep crashing?


This is the interesting content of one of the WER files, full file can be provided on request:


EventType=APPCRASH

ReportIdentifier=862babd8-3024-44d9-a5d7-63352aa0d1a2
IntegratorReportIdentifier=7821a737-8526-4b32-b0fe-6ea19c73d7e4
NsAppName=LogonUI.exe
OriginalFilename=logonui.exe
AppSessionGuid=00001748-0001-0025-2033-8e06da0ad601
TargetAppId=W:0000f519feec486de87ed73cb92d3cac802400000000!00009f0dc7c05fb0a7feae7709ddc039a15a423077ed!LogonUI.exe
TargetAppVer=2065//02//21:19:41:50!959b!LogonUI.exe
ServiceSplit=1493561761
TargetAsId=2246
UserImpactVector=808452096
IsFatal=1
EtwNonCollectReason=1
Response.type=4
Sig[0].Name=Application Name
Sig[0].Value=LogonUI.exe
Sig[1].Name=Application Version
Sig[1].Value=10.0.18362.1
Sig[2].Name=Application Timestamp
Sig[2].Value=b2f611fe
Sig[3].Name=Fault Module Name
Sig[3].Value=StackHash12_d1e
Sig[4].Name=Fault Module Version
Sig[4].Value=0.0.0.0
Sig[5].Name=Fault Module Timestamp
Sig[5].Value=00000000
Sig[6].Name=Exception Code
Sig[6].Value=80040154
Sig[7].Name=Exception Offset
Sig[7].Value=0
DynamicSig[1].Name=OS Version
DynamicSig[1].Value=10.0.18363.2.0.0.256.48
DynamicSig[2].Name=Locale ID
DynamicSig[2].Value=2057
DynamicSig[22].Name=Additional Information 1
DynamicSig[22].Value=54f3
DynamicSig[23].Name=Additional Information 2
DynamicSig[23].Value=54f3a7694ca97cceccda003be17bba71
DynamicSig[24].Name=Additional Information 3
DynamicSig[24].Value=fc25
DynamicSig[25].Name=Additional Information 4
DynamicSig[25].Value=fc25a5604ea3bcb8051b4ca28c8c7935
UI[2]=C:\WINDOWS\system32\LogonUI.exe
UI[5]=Check online for a solution recommended
UI[6]=Check for a solution later recommended
UI[7]=Close
UI[8]=Windows Logon User Interface Host stopped working and was closed
UI[9]=A problem caused the application to stop working correctly. Windows will notify you if a solution is available.
UI[10]=&Close
FriendlyEventName=Stopped working
ConsentKey=APPCRASH
AppName=Windows Logon User Interface Host
AppPath=C:\WINDOWS\system32\LogonUI.exe
ApplicationIdentity=743DB17F91E287EBA5F9F310EDA34DEB
MetadataHash=-967394385

:)

 

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