Inspiron 15 5584 BSODs on shutdowns/restarts after the BIOS 1.9.1 update.

Hi,

I bought this thing last September and haven't had any serious issues so far until last week I updated the BIOS to the latest 1.9.1 and started having a weird problem where upon shutdown/restart the screen will shut off but I can hear the system is still on for about 5 minutes or so before it gives me a BSOD and totally powers off.

To troubleshoot, I've went ahead and ran the built-in thorough diags, which came up clean. So I'm hoping it's not faulty HW with a BIOS update coincidence.

Yesterday, I've even went as far as do a clean Windows 1909 reload and installed all of the latest drivers from the Dell Support page, minus the Dell Mobile Connect and Smart Byte, which I will never use.

In the 1.9.1 notes it mentions that a lot of Intel CVEs were patched and I'm wondering if somehow in the process it also introduced some bugs. Is this a known issue or is anyone else having a similar problem with their Inspiron 15 5584 right after the latest BIOS update?

Please let me know if it's possible to downgrade the BIOS to one version prior. I don't want to attempt this if there's a risk in totally bricking the system.

Thanks