I temporarily replaced the hard drive in my MacBook from one with an old laptop that I couldn't boot to cd so I could install Windows 7. I installed it and put it in the other computer. But once I put the MacBook hard drive back in the Mac it would boot to a blank screen. I would hear the windows startup sound and usb devices would power on, but no screen. I didn't use boot camp because I used a not so legitimate copy of Windows 7 and boot camp recognized it as Windows 10 and didn't let me install so I did it from the boot menu. I can't install drivers and stuff in boot camp and I'm afraid the Mac is bricked. When trying to boot into OSX utilities nothing happens. Please help.
Edited by hamluis, 22 August 2017 - 12:54 PM.