OK, after 14 days of downtime, I am almost recovered from my motherboard failure.
I have all my files recovered, but at least one of my #qubes is having networking troubles. As in, it can get online just fine when connected to sys-firewall, but not with my VPN nor Tor networking qubes.
It should just be a maytter of figuring out which qube is the problem and then rebuilding it (which is actually pretty easy TBH).
Thanks again to all of you who helped me out with this fiasco. 🫂