Logon Screen Turns Black after Fresh Install of 22.04

[Rick St. George]

Did so ... and it replied "Legacy". But what did that do?
Should I REPLACE - or - MAUAL Partition??? I would like to keep the /home partition with all my files.
I see that the Partition Table is MBR and not GPT ... maybe that was part of the problem. If I choose GPT Table it will delete all data on the disk.
Should to another Fresh complete INSTALL? Built this system in 2014, MOBO is MSI 990FXA-GD65 v2 with AMD Fishara 8 core CPU.

[tea for one]

Did so ... and it replied "Legacy". But what did that do?

This means that you have booted in old-fashioned Legacy mode.

UEFI mode is the modern way and I suggest that you search for articles explaining the distinct advantages of UEFI installations.
After 6 days in the life of this thread without a permanent solution, my advice is:-

Backup your data
Boot the installer in UEFI mode
Create GPT on your disk
Install
Restore your data

I realise that this may seem a brutal option but, if done correctly, your PC will be sprinkled with magic powder.

Here is a little screenshot showing a USB with two boot choices
Look at the titles (same disk) - USB: UEFI:

[Rick St. George]

I understand there is a difference, but how do you BOOT in UEFI mode? In BIOS I selected UEFI Boot as 1st Option. SATA SSD as 2nd Option after installation.
But first I have to choose to boot the USB ISO thumb drive in order to install the OS. The rest is upto the Installer.

In the BIOS my optinos are;

USB Hard Disk: SanDisk Ultra Backup 2.01 (thumbdrive)
UEFI: Built-in EFI Shell
Hard Disk: WD Blue
USB Floppy
USB Key
USB CD/DVD
BEV

Previously chose Sandisk Backup, the thumb drive. Which should I choose?

[tea for one]

I understand there is a difference, but how do you BOOT in UEFI mode?

PC powered off
Attach your Ubuntu install USB
Power On
Press your dedicated key (F2 or F10 or other) to access PC one time boot menu
Stop and take a photo with your smart phone
Post the picture here

[Rick St. George]

Found in BIOS screen -> UEIF BBS Priorities, selected UEFI SanDisk.
Then found that in BOOT Order, selected as no.1.
Booted to USB Installer, once up, ran the d firmware code and verified Boot in UEFI mode.
Selected to Format and Flag 500 MB partition as EFI Boot,
Selected to Format and Flag 300 GB partition as / ext4
Selected to keep 650 GB /Home partition (which saves all my data).
Now I can move relevant files into their respective folders.

Will post under Virtualization problem i had after installing VirtualBox which prevented it from booting properly in the first place. Thanks Tea!