SOLVED! After my new logic board replacement,? folder appears.
I had a ram problem with my A1370, and replaced the logic board. I replaced the components needed, and it boots. It goes to a white screen, but about 60 seconds later it flashes the ? folder. I held option while I had my macOS 10.13.6 High Sierra USB 3.0 into the PC. Nothing shows. Reset the NVRAM, tried OPT-CMD-R, CMD-R, and any other recommendations. I reseated the SSD and ensured all cables and ribbon cables were connected properly. I also double-checked if the logic board was installed properly, and it was. I don't know what else to do but go onto Ifixit. Please help!
UPDATE!!!!!!
I've got my MacBook to work!
I put Hackintosh Lion on my USB
Booted it and it worked!
I went into the installer and installed macOS Lion.
Bu iyi bir soru mu?