#MAC BLACK SCREEN ON STARTUP 2017 SOFTWARE#

Then do a normal shut down, allowing it to spin and write it’s exit code. The fans will be on high, but let it boot all the way through to the home screen, if it makes it. It should start up after you push the power button after letting go.

Hold down the power button for about 30 seconds, the apply power by the power supply while holding down, Continue to hold down for another 30 seconds.

#MAC BLACK SCREEN ON STARTUP 2017 SOFTWARE#

You can buy that software on his site, but without the physical bypass, it's only a temporary fix, until you clear the PRAM or NVRAM.Īs far as the top question, I’ve had luck with turning off the unit, taking the battery out. So, if I do get one in, I let him do it for me for a modest price. I stay clear of that year, but MadMod is only 30 minutes away from me. It was an Apple recall to replace the Radeon gpu, but even after replacing it, they still eventually failed. Either way, you're faced with making the system believe that there is no other graphics processor but the onboard intel gpu. Or, software and a jumper cable to bypass and keep the sleep function working. I've done several and both involve, either soldering wires to pads to jtag code onto the logic board. Or, you could bypass it using RealMacMod's method. The only 'permanent' fix is to jtag the unit using dosdude1's method. You can even have the GPU reballed and it will work for a while, but overheat again and return. Some software fixes work for a while, but it always comes back. You'll need a hardware bypass on the grey screen to permanently disable the GPU.

Mac black screen on startup 2017