Apple APPLE K91F K91X FLYING_DUTCHMAN 051-8620 820-2915 Macbook Pro A1286

well he simple asked , if the page he showed about people converting maxcbook unit from ATI OR NVIDIA TO INTEL only was indeed a real job or just something fake !!its just a matter of reading calmely and you will unsderstand

 

Do you have Clear Me bios???

 

Buy https://vinafix.com/resources/how-to-discrete-to-uma-a1286-2011-2012.1276/ and not work. The logicboard reset and no video.

 

Tiresias (the GPUkiller)

The Tiresias is a small board that can be soldered onto the motherboard of the MacBook Pro 15-inch or 17-inch 2011 (Early or Late) models.

These are all the models that have the 820-2914-A, 820-2914-B, 820-2915-A or 820-2915-B motherboard.

The 820-2914 and 820-2915 board has two GPUs. The internal (Intel) GPU that is part of the PCH, and an external (discrete) AMD GPU. It is the external GPU that fails in 'a small percentage of MacBook Pro systems' (Apple-speak for: 'very many'). The Tiresias writes the 'gpu-power-prefs' nvram-variable to the ROM so that the Mac does not use the (dead) external (discrete) AMD GPU anymore. If the user clears the NVRAM (PRAM) there is no problem as the Tiresias will write the record again, and the Mac will work again.

This makes this the ideal solution to bring a 820-2914 or 820-2915 with dead GPU back to life. Installation is easy (no wires to solder). You will need to mount a very small board onto the motherboard. An experienced technician can do this in minutes. Other than that R8911 should be removed to turn off power to the dead GPU. This saves energy, generating less heat and conserving battery life. Removing R8911 also prevents the Mac from getting confused by the dead GPU because even with the GPU turned off it will still try to talk to the dead GPU. Depending on what internal contacts in the GPU are ruptured this might confuse or even crash the Mac.

http://www.cmizapper.com/products/tiresias-gpukiller.html

CMIzapper Tiresias GPUkiller

cmizapper.com

 

hi i have this machine wih full speed fan and IOS go slowly i need clear me of my dump i have tried the other but black screen my Gpu is 216-0810005 ATI radeon

 

tried this dump show question mark not recognize HDD (with my dump start ios but go slowly)

 

When testing the CMIzapper Tiresias GPUkiller I ran into one Mac that was running very slow with the fans at full speed,like you describe. In that case, much to my surprise, the problem turned out to be the GPU. I mounted a Tiresias and the Mac is now running normal proving that the cause was the GPU.
http://www.cmizapper.com/products/tiresias-gpukiller.html

CMIzapper Tiresias GPUkiller

cmizapper.com

 

with my dump macbook start system IOs ok but go slowly with your clearm not recognize hdd like in foto

 

this is with old