Some keys don’t work. Already replace keyboard and connector

MacBook Pro don't sleep, stuck on load screen while using

MacBook 15 2012 super slow even on usb

Answer to "MacBook si freeza e poi si riavvia"

Answer to "Sensore Chiusura schermo MacBook Pro 2012 13""

Answer to "replaced the display connector. still white screen"

Answer to "What interface does the hard drive use?"

Answer to "Graphics issues causing colorful screen?"

Answer to "What is this strange clicking noise that comes from the inside?"

Answer to "MacBook Pro only turns on when power button held down and more"

Answer to "Replaced battery. Worked fine but no sound. Now won’t start."