SUPPORT REQ: Macbook Pro Retina A1425 - Slow OS

[geordie10]

Hi everyone

Long time follower/reader, first time poster. Long story short, I have been gifted an A1425 Retina Macbook Pro that is having some issues.

ISSUE
The operation of the device is extremely sluggish and slow. Simple mouse click warrant a 2 second response. There is considerable lag and considerable wait upon booting and loading applications.

CURRENT TESTED REMEDIES
a. Replacing the current SSD with a Kingston 240GB mSATA SSD with adapter. (Improved speed but still very slow, still feels like a failing 15 year old hard drive)
b. Erased that SSD and installed MacOS via Recovery Mode. (Mountain Lion installed. Took about 8+ hours to install. No fix)
c. Reset PRAM and SMC (SMC slightly improved speed but still extremely slow)
d. Tried Hardware Diagnostic (D + Power) . Received EFBoot error. Unable to load.

CURRENT DEVICE OPERATION/SYMPTOMS
a. Display appears to be fine. No flicker on display and resolution displays correctly.
b. No other observed anomalies.

DEVICE SPECS

MacBook Pro 13-Inch "Core i5" 2.5 Retina 2012

2.5 GHz Core i5 (I5-3210M)

Intro. October 23, 2012 Disc. October 22, 2013* Order MD212LL/A Model A1425 (EMC 2557) Family Retina Late 2012 ID MacBookPro10,2 RAM 8 GB VRAM 768 MB* Storage 256 GB SSD Optical None*

Thank you kindly for any advice.

 

[geordie10]

Bump

 

[Mrmani]

These models have too many issues with efi bios pls clean the me engine if your bios is good then check for all the voltage sensors and temp sensor probably not reporting to the smc ohh the smc is also always bad on these models so reball it . will
Get resolved