MBP ME294B/A won't boot.

[mutts]

My 15 inch Macbook pro ME294B/A won't boot past the loading bar start screen, it just hangs at 2/3 progress.

Apple ME294B/A 15-inch MacBook Pro with Retina Display (Intel Quad Core i7 2.3GHz, 16GB RAM, 512GB HDD, Iris Pro Graphics, GeForce GT 750M 2GB, Mac OS X)

MacBook Pro 15-inch Retina quad-core i7 2.3GHz/16GB/512GB/Iris Pro Graphics/GeForce GT 750M 2GB

www.amazon.co.uk

Things i've tried.

- Installed new fans and thermal paste (I thought it was overheating).
- Tried new SSD.
- Tried install clean version of OSX but the install just hangs.
- Can get into disk utilities but can do much as machine hangs.
- Cleared PRAM/NVRAM.
- Tried to boot to external disk.

Any other options out there ??

 

[cmaier]

My 15 inch Macbook pro ME294B/A won't boot past the loading bar start screen, it just hangs at 2/3 progress.

Apple ME294B/A 15-inch MacBook Pro with Retina Display (Intel Quad Core i7 2.3GHz, 16GB RAM, 512GB HDD, Iris Pro Graphics, GeForce GT 750M 2GB, Mac OS X)

MacBook Pro 15-inch Retina quad-core i7 2.3GHz/16GB/512GB/Iris Pro Graphics/GeForce GT 750M 2GB

www.amazon.co.uk

Things i've tried.

- Installed new fans and thermal paste (I thought it was overheating).
- Tried new SSD.
- Tried install clean version of OSX but the install just hangs.
- Can get into disk utilities but can do much as machine hangs.
- Cleared PRAM/NVRAM.
- Tried to boot to external disk.

Any other options out there ??

May be bad ram.

 

[mutts]

May be bad ram.

Bad ram would still let me get past the loading bar ?

 

[cmaier]

Bad ram would still let me get past the loading bar ?

It very well might.

 

[AlanShutko]

Reboot while holding down Command-V. That will start things up in verbose mode, which should hopefully give you some clues about what is happening when it gets stuck.

 

[profcutter]

When you say it hangs, how long do you let it grind? Are we talking a minute, or an hour?

 

[mutts]

It hangs 15-20 mins, that should be plenty of time ?
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I will try CMD+V

 

[profcutter]

Yeah, you’re right, it sounds like a real hang. Sometimes folks get impatient.