Solved Macbook Won T Boot After Trying To Installing Ssd Macbook Pro 13 Unibody Mid 2012

Chosen Solution

Hello everyone,

I installed a SSD replacing the HDD in my MacBook mid 2012. After installing the SSD the PC won’t boot anymore, the LED indicator blinks once, then the fan spins for 1 second and stops. After around 10 seconds this just repeats, LED blinks, fan spins 1 second and over. I tried putting back the HDD, but the issue is still there now :O Any advice would be appreicted. I’ve also tried to boot without any hard drive and without the battery, but it’s all the same. When i boot without any harddrive, nothing happens at all.

Please Help :)

I’m suspecting your HD cable has failed but I’m not sure, did the display show any image? About the screens on your Mac as it starts up

Just a shot but worth a try - disconnect the mag-safe. Disconnect the battery. Press and hold the power on button for ten seconds. Reconnect the battery, then the Mag-safe adapter. You should get a spontaneous reboot. This failing, take it to an independent professional.