Contents
Why is my MacBook Pro 15 not booting?
I have a MacBook Pro 15″ (Early 2011) model which suddenly is not booting correctly. Apple logo and loading bar appear. Loading bar loads part way, freezes for a while. Screen flashes momentarily, then grey screen appears. Grey screen stays forever. Clear NVRAM: Apple logo and loading bar appears, freezes, and stays that way forever.
When did Apple update firmware for MacBook Pro?
This update fixes several issues to improve the stability of MacBook Pro (Early 2011) and MacBook Pro (Late 2011) computers and is recommended for all users.
How can I boot from a non working Mac?
If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode by holding down the key combination command-T at the startup chime. Connect the two Macs with a FireWire or Thunderbolt cable.
What to do if your MacBook Pro is stuck in a boot loop?
Converting it over into a Linux machine makes the GPU bypass on a defective machine easier, but will not do much good for keeping it around long enough. 1. Remove hard drive. 2. Backup all data from it (external case will help) to another computer. 3. Format your HD.
How can I get my MacBook Pro to boot?
You can connect a FireWire/Thunderbolt cable between yours and a working Mac, and use Target Boot mode to see if it boots properly. You can find more detailed instructions here but it pretty much entails booting your MacBook while pressing the ‘T’ key.
Touch the tip of the iron to each metal side of the resistor (where the joints are), alternating one side to the other for about 1-2 seconds each, until you notice the resistor starts to become free from the logic board.
Why is my 2011 MacBook Pro running slow?
My sister just turned over her 2011 15″ MacBook Pro, which she said was running slow, and I dug in. First off, it was using a slow 5200 RPM hard disk; after replacing that with a nice, fast SSD, and ensuring she had 8 GB of RAM in the laptop, I was pretty pleased with my work, and was about to shut down the laptop and send it on its way.