Disconnected the D HDD but did not fix the 51 second delay.I don't have time to disconnect the HDD right now but will try that this evening.
When I check Task Manager Processes, I don't see an entry for Microsoft Defender or for Windows Defender. Unless they go by a different name. So it appears that BD disabled Microsoft Defender as it should.Also check that Microsoft Defender acknowledges that Bitdefender is the recognized AV and isn't competing with it.
At first, I was reluctant to permanently uninstall Bitdefender for troubleshooting because it might be hard to reinstall it and have it recognized as a paid for subscription.Just disable or uninstall bitdefender for the time being. You can always add it back.
I suspected Bitdefender as well. Well, at least a conflict between it and MS Defender.When I check Task Manager Processes, I don't see an entry for Microsoft Defender or for Windows Defender. Unless they go by a different name. So it appears that BD disabled Microsoft Defender as it should.
This morning I did a power on boot (after the PC was shutdown all night) and the desktop icons displayed instantly. So far so good "without Bitdefender".But it came to the point and you are 100% correct. So I uninstalled BD and did 3 shutdown and power on boots. All 3 boots into Win11 display the desktop icons instantly when the taskbar is displayed.
So yes, it definitely proves that BD was the culprit that was delaying the desktop icon display for 51 seconds. (Unless tomorrow morning's power on boot has the delay problem again 😉)