Though you could do an identical meme with Games Workshop and Blizzard. There were so many people back in the day that didn’t know Warhammer 40k had been around for over a decade when StarCraft released.
And then the same thing happened again when Dawn of War was released.
You’re able to run MemTest? That’d suggest it’s not actually fried if it can still run things.
Check your BIOS/UEFI to see if Secure Boot was re-enabled. If your CMOS battery died and you didn’t notice, your machine config could have reset to its default values during the power loss.