Guys thank you for your responses - in particular the Jay's2cents video was very informative.
I have an Aorus X570 Ultra that has blown, and it meant that I had to move from a Ryzen 5950x to an old Z97m with an i7-4790k I enjoyed in 2015 but gifted to my girlfriend when I upgraded to a 3900x/AM4 board a few years ago (belive me, I sholdn't have bothered - she was beyond ungrateful...apparently it was a terrible xmas gift and she doesn't care that Devil's Canyon was the best iteration of Haswell/the fastest chip to fit in to an LGA 1150 socket). It was less painful to drop another £300 on a new Aorus X570 than it was to wait it out for Gigabyte to get their act together. Hopefully when gigabyte get their RMA system back online I can either ask them for a refund (ha!) or sell the new motherboard they send me on eBay.
If
@GIGA-Man does see this message - please let me know how best to sort the RMA of my dead mobo and wheter it is feasible to get a refund for the identical board I've just purcahsed. Also, I hope work isn't too awful at the moment....it doesn't sound like much fun being a Gigabyte rep right now
On an aside, my previous builds have used ASRock boards and I've never had a problem. Have I just been unlucky with the Gigabyte board I purchased, or are they lower quality than other brands? I was so close to buying the ASRock TaiChi X570 when I switched to an AM4 socket...I'll definitely be spending more time understanding build quality when I eventaully upgrade my 5950x/DDR4 ram.
Best,
Wintermute