[ubuntu_studio] QEMU/KVM - converted file to qcow2 fails to Run

Note Build:
Mobo - MSI 990FXA-GD65 Military Hardened (not overclocked) set for UEFI Boot (confirmed)
CPU - AMD FX-8320 Vishera 8 Core
GPU - RX 580 8GB Ram in PCIe x16 slot
PSU - 450 Watt Enermax Gold
RAM - 2 X 8GB Corsair Vengence DDR3 1600 Mhz
OS - UbuntuStudio-64 v22.04 LTS


I received my new GPU, after hardware install ... did a Fresh Install of UbuntuStudio v22.04. Both Monitors now working.
Installed virt-manager via MUON Pkg Mgr, virt-manager will not Run. Have to open terminal and do;
Previously converted from VirtualBox xxxx.vdi - VirtualBox no longer installed. Using the following format;

Selected the qcow2 file, from conversion, and Blue Screen shows when WinXP attempts to start with Stop: 0x000007B. Even Safe Mode won't work. Maybe it got corrupted and should try the conversion process again? So did so ... same thing! The qcow2 file is in under my Home dir. I could start / build another one, but has to be Windows to install software for Trade Charting via MetaStock and a number of added modules. But, If I could import the Appliance .. its all there!

Any ideas???
Thanks!