Hi guys, I got this 2hand Macbook (warranty expired) few months ago, I had never test the thunderbolt display port or USB till few days ago I found out it just doesn't work.
The thunderbolt still work with power connection, but doesn't work with display port or USB. I got an USB hub which still light on when plug-in the Macbook, but Macbook couldn't recognize it. The same issue with display port, no display signal was found.
I thought it might be my Macbook has been repaired or fixed something on mainboard before, so I brought this to a repair store, they told me my Macbook haven't been repaired before and hardware seems fine.
I tried every methods to fix it, reset PRAM, SMC but none of them ever work.
(actually I don't know it I reset PRAM correctly, the manual said release the keys on the 2nd start up sound, but no sound for me at all, so I release it after few times screen show up with black screen)
Have any one experience this issue and do you guys have any idea this could be software or hardware issue?
I'm very appreciate your helps. Thanks
The thunderbolt still work with power connection, but doesn't work with display port or USB. I got an USB hub which still light on when plug-in the Macbook, but Macbook couldn't recognize it. The same issue with display port, no display signal was found.
I thought it might be my Macbook has been repaired or fixed something on mainboard before, so I brought this to a repair store, they told me my Macbook haven't been repaired before and hardware seems fine.
I tried every methods to fix it, reset PRAM, SMC but none of them ever work.
(actually I don't know it I reset PRAM correctly, the manual said release the keys on the 2nd start up sound, but no sound for me at all, so I release it after few times screen show up with black screen)
Have any one experience this issue and do you guys have any idea this could be software or hardware issue?