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Really, really weird RAM problem...

post #1 of 13
Thread Starter 
You don't need to know the preceeding events, just know that I've went through a lot of bother so far.

I'm building a system for a mate of mine, and it didn't POST. After about 4 hours of diagnosing what the hell it could be, I discovered it was the RAM.

I replaced the RAM with 4GB of my own RAM (2x2GB), and the system booted fine.

I then added the 2GB stick (that we suspect to be faulty) and added it into the motherboard's 2nd RAM channel, the system again booted fine, and even said I had 6GB of RAM.

I then took my 4GB out again, after which the system wouldn't boot again.

The ram's DDR3-1333. No matter what slot I put the faulty 2GB stick in, it won't even POST. Although, there is fan activity, the HDDs move (I don't know about graphics card activity, the one I bought him has a passive heatsink) but the monitor doesn't get a signal.

I have a feeling this is something really trivial.

Anyone care to have a shot at what it might be, and how to fix it?

Thanks!
post #2 of 13
RMA the faulty stick.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE Gigabyte GA-770TA-UD3 HIS ATI Radeon HD 5830 Turbo 2x4gb mushkin 2x4gb Corsair 1333mhz cas 9 
Hard DriveOptical DriveOSMonitor
Spinpoint F3 1tb, Seagate Black 1tb LG BD-RE & Asus DVD-R DL RW Vista x64 Acer 1440 x 900, HP 1600x900 
KeyboardPowerCaseMouse
Logitech wave Sunbeam Comet 680W NZXT Apollo Logitech 
Mouse Pad
Genius I608 Tablet 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE Gigabyte GA-770TA-UD3 HIS ATI Radeon HD 5830 Turbo 2x4gb mushkin 2x4gb Corsair 1333mhz cas 9 
Hard DriveOptical DriveOSMonitor
Spinpoint F3 1tb, Seagate Black 1tb LG BD-RE & Asus DVD-R DL RW Vista x64 Acer 1440 x 900, HP 1600x900 
KeyboardPowerCaseMouse
Logitech wave Sunbeam Comet 680W NZXT Apollo Logitech 
Mouse Pad
Genius I608 Tablet 
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post #3 of 13
Your RAM that you put into the board is a lower frequency, then the aparent non-stable ram? if so, it could be that the board doesnt support the initial ram frequency, and when you put your own stuff into the board its obv lowering the frequency of the higher speed ram to match the lower stuff, hence then it would post no worries. and ofc with the lack of extra info, this is merely a guess.
post #4 of 13
Thread Starter 
Quote:
Originally Posted by robchaos View Post
rma the faulty stick.
rma?
post #5 of 13
system specs please?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE Gigabyte GA-770TA-UD3 HIS ATI Radeon HD 5830 Turbo 2x4gb mushkin 2x4gb Corsair 1333mhz cas 9 
Hard DriveOptical DriveOSMonitor
Spinpoint F3 1tb, Seagate Black 1tb LG BD-RE & Asus DVD-R DL RW Vista x64 Acer 1440 x 900, HP 1600x900 
KeyboardPowerCaseMouse
Logitech wave Sunbeam Comet 680W NZXT Apollo Logitech 
Mouse Pad
Genius I608 Tablet 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE Gigabyte GA-770TA-UD3 HIS ATI Radeon HD 5830 Turbo 2x4gb mushkin 2x4gb Corsair 1333mhz cas 9 
Hard DriveOptical DriveOSMonitor
Spinpoint F3 1tb, Seagate Black 1tb LG BD-RE & Asus DVD-R DL RW Vista x64 Acer 1440 x 900, HP 1600x900 
KeyboardPowerCaseMouse
Logitech wave Sunbeam Comet 680W NZXT Apollo Logitech 
Mouse Pad
Genius I608 Tablet 
  hide details  
Reply
post #6 of 13
Thread Starter 
Quote:
Originally Posted by Asmodean View Post
Your RAM that you put into the board is a lower frequency, then the aparent non-stable ram? if so, it could be that the board doesnt support the initial ram frequency, and when you put your own stuff into the board its obv lowering the frequency of the higher speed ram to match the lower stuff, hence then it would post no worries. and ofc with the lack of extra info, this is merely a guess.
They're all 1333MHz
post #7 of 13
Quote:
Originally Posted by TakMan View Post
rma?
RMA means to warranty return it for a replacement, but that is just a guess assuming you are building a current system that supports the frequency and timings of the ram you are trying to run. If everything is compatible and you have 1 ram stick that causes the computer to not even boot into bios, but it works with the other sticks, my first guess would be faulty ram .
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE Gigabyte GA-770TA-UD3 HIS ATI Radeon HD 5830 Turbo 2x4gb mushkin 2x4gb Corsair 1333mhz cas 9 
Hard DriveOptical DriveOSMonitor
Spinpoint F3 1tb, Seagate Black 1tb LG BD-RE & Asus DVD-R DL RW Vista x64 Acer 1440 x 900, HP 1600x900 
KeyboardPowerCaseMouse
Logitech wave Sunbeam Comet 680W NZXT Apollo Logitech 
Mouse Pad
Genius I608 Tablet 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE Gigabyte GA-770TA-UD3 HIS ATI Radeon HD 5830 Turbo 2x4gb mushkin 2x4gb Corsair 1333mhz cas 9 
Hard DriveOptical DriveOSMonitor
Spinpoint F3 1tb, Seagate Black 1tb LG BD-RE & Asus DVD-R DL RW Vista x64 Acer 1440 x 900, HP 1600x900 
KeyboardPowerCaseMouse
Logitech wave Sunbeam Comet 680W NZXT Apollo Logitech 
Mouse Pad
Genius I608 Tablet 
  hide details  
Reply
post #8 of 13
Run Memtest86+ to determine if the problem is with your RAM exclusively. It could be something as simple as one DIMM was not seated properly.
Biohazard
(13 items)
 
  
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Core i7 930 @ 4.21 GHZ 1.3v ASUS Rampage III Extreme ATI Radeon HD 5850 CF Mushkin Redline PC312800 6GB 
Hard DriveOptical DriveOSMonitor
OCZ Vertez 2 120 GB SSD, 2x WD Caviar Black RAID 0 Lite On DVD burner Windows 7 Ultimate x64 Hannspree 20" HDMI monitor 
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Logitech G15 PC Power & Cooling Silencer 750W Cooler Master HAF 932 Logitech G9x 
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Biohazard
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 930 @ 4.21 GHZ 1.3v ASUS Rampage III Extreme ATI Radeon HD 5850 CF Mushkin Redline PC312800 6GB 
Hard DriveOptical DriveOSMonitor
OCZ Vertez 2 120 GB SSD, 2x WD Caviar Black RAID 0 Lite On DVD burner Windows 7 Ultimate x64 Hannspree 20" HDMI monitor 
KeyboardPowerCaseMouse
Logitech G15 PC Power & Cooling Silencer 750W Cooler Master HAF 932 Logitech G9x 
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Reply
post #9 of 13
Thread Starter 
Quote:
Originally Posted by robchaos View Post
system specs please?
The current setup that I'm trying is

AMD Phenom 810 x4 @2.8GHz
2GB DDR3 RAM @ 1333MHz
500GB Hitachi Deskstar
BIOSTAR NFS2OD3 Motherboard
650W CiT PSU
PowerColor HD5450 Passive
post #10 of 13
Then i would warranty return it, sure it will post, but its probably not stable, my guess is its being carried by the working stuff long anough to post and get to the desktop, but im betting it wouldnt last a memetest with the faulty stuff in,
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