Is your I/O Board Cable malfunctioning?
Repave the broken road between your left I/O board your logic board. Identify by 821-0416-A and 632-0393-A printed on part.
- 2.16 GHz (Model A1151) 17" MacBook Pros
Option 1 / Used, fully tested
Lifetime Warranty - This iFixit product is guaranteed to function as long as you have it.