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Bad RAM turn good then bad?

post #1 of 4
Thread Starter 
A little bit of background:

I got a new rig with 8 gb of RAM (4 gb x 2) about 2 months ago and everything was fine til I had a random flash crash on chrome after about a month. It never happened before so I thought it can't be anything serious. Then I started up LoL and upon finishing the loading screen, I crashed immediately. At this point, I suspected something was acting up.

I restarted my PC and went into My Computer. BSOD for the FIRST time and I thought that I got infected by a virus. I immediately backed up all of my important files and started reformatting. Halfway through the reformat, a blue screen came up and it looped continuously. I did some research on my laptop and tried using memtest86+. Running the tests for a few minutes, memtest reported thousands of errors and I concluded that one of my ram sticks went bad.

I stopped using my desktop for a few days and one day, I decided to run memtest again hoping that it would just "work" again. Strangely, memtest reported NO errors at all and I proceeded to reinstall windows successfully. Everything worked again although I noticed that it was slightly slower than before (could be a psychological thing).

Yesterday, my computer was in a bsod loop again. This time, I tried checking the ram sticks manually. I removed the first stick (b) and the computer booted up just fine. I ran memtest and there were no reported errors on stick (a). To make sure that it isn't the ram slot that's acting up, I swapped stick (b) into stick (a)'s slot and memtest still reported errors.

My question:

Have any of you experienced this problem before? How did a bad ram suddenly turn "good" again? Now I'm worried that when I send it back, it would turn "good" again. Anything else I should check?
post #2 of 4
Could be a slightly weak IMC.
    
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CPUMotherboardGraphicsRAM
Xeon w3680 Gigabyte X58A-UD3R GTX 295 Engineering Samples 2X Corsair XMS3 
Hard DriveHard DriveCoolingOS
Sandisk SSD Seagate Corsair H50 W7 Ult 
MonitorMonitorKeyboardCase
Viewsonic VA1912wb Viewsonic VA912b K350 CM HAF 
Mouse
Logitech M570 
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by MR KROGOTH View Post

Could be a slightly weak IMC.

Educate me on this. How/what does the IMC affect the system?
post #4 of 4
Sorry it took so long.
IMC = Integrated Memory Controller.
Controls data being passed between hard drive <-> CPU <-> RAM.
Any weakness could amount to instability, especially when using more than 2 sticks.
However, in your case it seems as yours is having a hard time compensating for two. Check your RAM timings again, as well as yours speeds, perhaps trying altering your IMC/NB voltages up and down a bit, as well as your RAM voltages a little. They're quirky.
    
CPUMotherboardGraphicsRAM
Xeon w3680 Gigabyte X58A-UD3R GTX 295 Engineering Samples 2X Corsair XMS3 
Hard DriveHard DriveCoolingOS
Sandisk SSD Seagate Corsair H50 W7 Ult 
MonitorMonitorKeyboardCase
Viewsonic VA1912wb Viewsonic VA912b K350 CM HAF 
Mouse
Logitech M570 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Xeon w3680 Gigabyte X58A-UD3R GTX 295 Engineering Samples 2X Corsair XMS3 
Hard DriveHard DriveCoolingOS
Sandisk SSD Seagate Corsair H50 W7 Ult 
MonitorMonitorKeyboardCase
Viewsonic VA1912wb Viewsonic VA912b K350 CM HAF 
Mouse
Logitech M570 
  hide details  
Reply
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