Is my ram faulty or not?

Driven24

Honorable
Jul 6, 2013
6
0
10,510
I have a dual channel motherboard with 2 4gb G.skill ram. When I downloaded Windows 7 64-bit home premium on my new desktop computer I had problems with the ram on the second slot, so I removed it. I tried to download windows 7 again and it worked with the 1st ram still inserted. I inserted the 2nd ram back into the motherboard again, and I then used dxdiag to see if the specs are correct. To my surprise, the computer said it had 8 gb of ram. This must mean the ram is not faulty at all. I'm so confused if the ram stick is faulty or not. Can someone please help me?
 
Solution
And....? You mentioned it after I did, is there a problem with another mentioning it? Tabris also brought up the point that at times you can load an OS with less than max DRAM you plan to run, which is a good point

Tradesman1

Legenda in Aeternum
Can run Memtest on each stick individually to check (takes a long time so would stickj to 4, maybe 5 passes...don't know what mobo you have or CPU, but if you have 4 DRAM slots, will prob want in slots 1-3 from CPU, also have no idea of the model of DRAM , but guessing they are 1.5 sticks, so could even raise DRAM to 1.55 if problems persist and memtest comes back OK, let me know CPU/mobo and the model # of DRAM
 
All good advice.
Let me summarize and add:

1. Update the BIOS if an update exists

2. Check the motherboard manual to determine the CORRECT slots (I don't think it would boot if they weren't correct but maybe you were in the WRONG slot before?)

3. Run MEMTEST (major errors show up in SECONDS)

4. Run at DEFAULT settings (that's "XMP" for Intel motherboards. When you click that or the AMD equivalent it should simply apply the optimal settings for BOTH your RAM and CPU. Never diagnose a PC that's overclocked. Always use default settings.)

Other:
You said the 2nd stick didn't work. I see two probable causes:
1. You were in the wrong slot, or
2. The motherboard has an INTERMITTENT problem.

My motherboard started having issues which turned out to be a loose connection in the RAM socket.

*I assume by "downloaded" Windows 7 you mean you purchased a digital download, created the DVD then INSTALLED as per normal? If that's the case, don't forget to install important drivers such as the MAIN CHIPSET driver (see motherboard site under "support/downloads).

 
Been able to install and OS and count the memory using software doesn't mean the RAM isn't faulty.

Sometimes you can have trouble installing an OS (with over 256MB to 2GB RAM, or even over 4GB) due to various BIOS and firmware issues.

http://www.memtest.org/ is an excellent, and free, memory test application, recommended almost universally (and above). There is another version available but it had spotty chipset support and does not have 'plus' (+) after the name from another site.
 

Tradesman1

Legenda in Aeternum


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+1
 


Memtest has been mentioned constantly throughout. Not sure why you felt it important to bring up again.