All done now, and in well into the BIOS as a old avid overclocker i have spent many hours in BIOS + i did press the clear CMOS button too, so had to get in there to set boot order.
Still scared the living hell out of me with a board that unresponsive 😱 i had other USB things plugged in like that but none did what the Maxi did today, normally they just charge even if COMP is off otherwise as 5 V rail are still live.
Better swing by the bank and make sure they are still up for lending me the money for the upgrade, and get the money on my account ready for use, most things are lined up in local B&M stores, just got to get Ryzen cooling head from the UK, new hose and fluids i will also get locally.