Weird freezing and display issues after ram upgrade and OS X upgrade.

[MobsterMac]

I upgraded my ram to 8 gigs and also upgraded to Mountain Lion.

After both of these upgrades I've noticed a significant slower than normal startup and I'm also having some freezing issues along with little pixelated squares on my display.

What would be the recommended steps to trouble shoot these issues. I'm seriously thinking about reverting back to Snow Leopard at this point.



MacBook Pro
15-inch, Early 2011
Processor 2 GHz Intel Core i7
Memory 8 GB 1333 MHz DDR3
Graphics AMD Radeon HD 6490M 256 MB
Software OS X 10.8.2 (12C60)

Graphics

AMD Radeon HD 6490M:

Chipset Model: AMD Radeon HD 6490M
Type: GPU
Bus: PCIe
PCIe Lane Width: x8
VRAM (Total): 256 MB
Vendor: ATI (0x1002)
Device ID: 0x6760
Revision ID: 0x0000
ROM Revision: 113-C0170H-521
gMux Version: 1.9.23
EFI Driver Version: 01.00.521
Displays:
Color LCD:
Display Type: LCD
Resolution: 1280 x 800
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Built-In: Yes
SyncMaster:
Resolution: 1280 x 960 @ 75 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number:
Mirror: Off
Online: Yes
Rotation: Supported
Adapter Type: Analog VGA Or Analog Over DVI-I
Adapter Firmware Version: 0.00

 

[yusukeaoki]

Have you tried SMC reset?

 

[Binomio]

The little pixels on the display are usually caused by bad RAM and its not a software issue.

 

[MobsterMac]

Thanks guys. I'm going to look into both. Any quick tips on testing ram?

 

[Giuly]

Run memtest86+. What kind of RAM did you install?

 

[old-wiz]

I would replace the original ram and see if the problem goes away. Anytime you upgrade ram and have problems the first thing to do is always go back to original. I had to do this when I upgraded ram on both an iMac and an MBP. I tried the reseating several times but going back to original ram always fixed it. I had to get the ram replaced twice by the mfgr before it worked.

 

[tobystic]

I had the same problem after upgrading from 2x 1Gb to 2x 2Gb to make 4Gb. Apparently the RAMs sold to me weren't knew and I was not aware; freezing and restarting for about 5 times in 24 hours


I carefully removed the RAMs, took my body spray (in place of methylated spirit or any ethanol) and soft toothbrush. I gently 'washed' the RAMs with it and placed them back about 10mins later


More than a week and no freeze again!