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Windows 7: 8gb ram only reading as 4gb

23 Jan 2015   #11

Windows 7 Home Premium 64bit

Here are my CPU-z results, it appears only Slot 2 is being read, so I'll try testing both slots and both ram sticks and see if that sheds any more light!

8gb ram only reading as 4gb-memory.png

8gb ram only reading as 4gb-spd1.png

8gb ram only reading as 4gb-spd2.png

My System SpecsSystem Spec
23 Jan 2015   #12
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

Evey thing points to one module of ram being seen as 4 gigs.

Here is a tutorial to test you ram. It does take some time. At least 8 continuous passes need to be done or until bad ram is found.

RAM - Test with Memtest86+

Could you post a web site of the exact ram you are using?

Is it this?

Crucial Technology CT51264BF160B.C16F 4GB
Description: PC3-12800, 1.5V, 1.35V , CAS Supported: 6 7 8 9 10 11
Other names: Crucial Technology CT51264BF160B.C16F
Memory First Benchmarked: 2012-12-01
Last Price Change: $44.99 USD (2014-03-31)
My System SpecsSystem Spec
23 Jan 2015   #13

Windows 7 Home Premium 64bit

Aaaah! was me

I tested both slots with both sticks individually and they all worked, and after a couple more attempts at trying both sticks at the same time both are reading and I have 8gb of RAM working!

It was quite tricky aligning both at the same time, and the one in slot 1 must have not been properly connected.

Drama over and thanks all so much for your advice!
My System SpecsSystem Spec

23 Jan 2015   #14

win 7 64 bit

Good to hear
My System SpecsSystem Spec
23 Jan 2015   #15
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

I'm I correct in assuming that both ram modules were not install properly and now they are?

Could you post another picture of Resource Monitor so I can have another look?

Remember post # 5
In most cases that means ram installed incorrectly or the wrong ram or ram settings.
Try something simple first. Re-seat both sticks of ram and then Reboot a couple of times and then take another look at the ram in Resource Monitor. It's possible that one stick of ram in a match set could be bad but not likely.
My System SpecsSystem Spec

 8gb ram only reading as 4gb

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