I recently had the old error 01 issue on my RE4. did the normal detective work and narrowed it down to the memory. however windows will show you that you have a memory issue but will not identify which Dimm is the culprit. Well, in you UEFI bios on that last page you'll see tool menu where you can see you individual memory Dimm listed. If all is Good they will read okay, Mine on slot "B1" read "Abnormal". it made it simple to remove the offending Dimm and continue computing til my RMA replacement arrives. Thank you ASUS for this Feature in UEFI. :cool:
Intel Core i9 103900KS
Asus Maximus Z790 Extreme [bios 1801]
LG (34U97-s) Monitor 3440 x1440
Nvidia RTX 3090 FE
Windows 11 Pro
64gbz Memory