Gigabyte Aorus maybe? Some years ago I sent in my MB that suddenly stopped working via the store I bought it from. No issues. Repaired and fully functional since.
I sent in another one after for a very weird issue. Long story short, I think something is slightly broken with the RAM slots but since it happens "only" sometimes (depends on how hardware is plugged in; and also randomly), they could not find any problem and sent it back as "OK". So I am only partial disappointed. Process was without friction and charge.
The board that still currently drives my computer is asrock. Won't buy them again because they put the cooling fan directly below the (hot) grapics card, made accessing m.2 real shitty and were missing a uefi feature I thought was standard (from gigagbyte; which graphics to use for init).
All my boards fall in the highend category, but not the absolute top. Also, I am in the EU.
My dad is one of them. Always says that stuff does not matter. I once asked him if he followed the instructions closely and said yes. I did not believe him and so asked every point in the list individually. For every every instruction he told me that he didn't do that.