PROBLEM
2011 MacBook Pro 15″(A1286) and 17″(A1297), their AMD GPU chip always failure
because of design defect.
Defect GPU model:
AMD HD6490M / HD6750M / HD6770M.
*Reflow or replace the AMD GPU or VRAM, will temporary fix, but it will fail again.
SOLUTION
Disable the AMD GPU, set the iGPU(intel GPU) as the primary graphics will be stable.
Defected Model
2011 Early Macbook Pro 15 inch A1286
2.0GHz MacBook Pro (MC721)
2.2GHz MacBook Pro (MC723)
Part Number: 820-2915-A/B
2011 Late Macbook Pro 15 inch A1286
2.2GHz MacBook Pro (MD318)
2.4GHz MacBook Pro (MD322)
*& 2.5GHz custom specification
Part Number: 820-2915-A/B
2011 Early Macbook Pro 17 inch A1297
2.2GHz MacBook Pro (MC725)
Part Number: 820-2914-A/B
2011 Late Macbook Pro 17 inch A1297
2.4GHz MacBook Pro (MD311)
*& 2.5GHz custom specification
Part Number: 820-2914-A/B