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Windows 7: Memory usable Vs Unused Dell Win 7 64 bit

02 Dec 2014   #1

Windows 7 Ultimate x64
Memory usable Vs Unused Dell Win 7 64 bit

I'm sorry to post again about this problem but it drives me mad!
I just can't get my memory to work.
Got 8 x 2GB sticks and when all installed the Buzz of death goes off and that's it.
If only installed in slots 1 and 2 everything's OK.
If in 1, 2, 3 and 4 ... Buzz of death.
If in 1 and 2 and 7 and 8 as in image below, 8GB installed 4 GB Usable
Please can you help?

My System SpecsSystem Spec
02 Dec 2014   #2

Windows 7 Pro x64 Windows 10 Pro x64

We can`t help you without knowing the exact make and model of the pc, please fill in your specs completely.

Are they all the same speed ?

Are they all the recommended speed ?

And Welcome to Seven forums
My System SpecsSystem Spec
03 Dec 2014   #3

Windows 7 Ultimate x64

Hey AddRAM,
thank you for the welcome message and your reply.
The PC is a Dell Precision T5400 with 2 quad processors @3Ghz
Now I've tried again for a few hours and all 16 GB of RAM is showing as installed
but only 8 usable. Also tried all the msconfig.exe possible combinations but no change.
I'm attaching a couple of snips for you to look at.
Best Regards

Attached Thumbnails
Memory usable Vs Unused Dell Win 7 64 bit-dell-memory-16gb-8gb-usable.jpg   Memory usable Vs Unused Dell Win 7 64 bit-dell-device-manager.jpg  
Attached Images
Memory usable Vs Unused Dell Win 7 64 bit-dell-memory-msconfig.jpg 
My System SpecsSystem Spec


 Memory usable Vs Unused Dell Win 7 64 bit

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