Keyboard errors and trackpad failure
Internal keyboard function badly, and Trackpad stopped working after battery pack change. Keys to be pressed 2-5 times before it works. Hardware diagnostics gave error code 4MEM/9/40000000: 0x78fc6190. Help needed.
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2 commentaires
Most likely trackpad cable ripped when doing the battery replacement.
Anyway you should enter your MacBook serial number on the everymac website via its ultimate Mac lookup and post the correct model information so we know which MacBook it is.
For example MacBook Pro 15 inch 2013.
par Ben
The model is MacBook Pro 15" Retina mid 2012. Trackpad cable also affect keyboard?
par Tor Seim