if you asked 15 years ago... super mario 1 super mario 3 rainbow island contra (without the 30 lives code) ninja gaiden double dragon (arcade) ninja turtles. if you asked 10 years ago... hellfire (genesis) super rtype 3 (snes) sf2 champion ed (arcade) final fantasy 4 (sfc) might and magic II (genesis) might and magic IV/V (world of xeen) (pc) 7th saga (snes) if you asked 5 years ago... donkey kong country 2 (snes) kof95 (level samsho2 if you ask me now...
Check your registry autostartup for funky entries: Some of the common keys to check HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Runonce HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices
Technically, it doesn't fix anything. Because there was no corrupted or buggy m1 in the first place. This is the m1. Just encrypted, and unfortunately, unusable as of now.