A month ago, I tried loading up a SNES rom and was able to play it for about 5 minutes before the game froze and the music kept play. I reset the Mister and was able to get back to the game and it crashed again after 5 minutes. A week later I tried loading up a new SNES rom and it "loaded" the rom, but it would just hang up on a black screen instead of playing the rom. Then eventually it did that with every single emulator core/rom I tried going forward. When trying a NES rom I got a Disk 1A error message on the top left, googling has not yielded any results for what that means. I thought it could be bad RAM that was the problem so I ordered new RAM from Mister Addons(which cost a pretty penny btw). When the part came in and I replaced it, the games still won't load. I tried the memtest in utility and don't have a clue how to read if the ram is working properly or not, I'll post an image. I'd have a tough time believing the RAM I just bought would be broken though.
I am looking for troubleshooting suggestions to get to the bottom of whats going on. I just hope my DE10 Nano isn't broken because that would be out of the budget to try to replace at this point.
(The things I've tried so far, tried different roms/cores, swapped out the RAM.)