Hello guys,
on my MacBook Pro 13-inch Mid 2010 + 2+2GB ram
I changed from HDD(macOS Mountain Lion) to SSD(empty) and a new keyboard(not genuine),
after this process, I did a clean macOS upgraded from Mountain Lion to High Sierra, during the upgrade was some firmware upgrade and it showed...
Does anyone know what this noise means? I'm scared to turn the thing on now but i really need to back up my stuff if it breaks... They changed the whole motherboard a few months ago.