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Hi everybody . I replaced GPU thermal paste today and accidentally broke one GPU standoff on the logic board when I was tightening the screws.

And a tiny piece fell off from the logic board.

I actually tested my MacBook before I tightened the screws and it worked fine. But now just black screen when I turn it on, though I can hear the startup chime. What’s the name of that tiny piece? How to put it back (or do I need to)? Also is that possible that the broken piece and standoff cause black screen? Thanks in advance!

The part broken off is the capacitor C8505 which powers the PP1V35_GPU_FBVDDQ line going into the U8500 chip which appears to be a VRAM chip for the graphics chip. That will need to be replaced as the VRAM chip is not getting sufficient power now. C8550 info: 4.7UF6.3V20%X6S0402