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Windows 7: 8gb ram only reading as 4gb

22 Jan 2015   #1
abyrne

Windows 7 Home Premium 64bit
 
 
8gb ram only reading as 4gb

Hi,

I have an Acer Aspire 5742, and had been having loads of problems over the past six months with BSODs and other performance problems.

I managed eventually to narrow the offender down to my RAM, I had one 4gb card originally, so went on Crucial and bought two compatible 4gb sticks, thinking I may as well upgrade as well as replace.

I put the cards in today, and my computer is saying I only have 4gb of RAM?? I'm sure I've installed them properly, although they are a bit fiddly. Any advice on what to do next?

Thanks!


My System SpecsSystem Spec
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22 Jan 2015   #2
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Please post a picture like this from your computer.

Use this tutorial by Brink to post the picture.

Screenshots and Files - Upload and Post in Seven Forums

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

Are you sure you have a 64 bit Windows 7?


My System SpecsSystem Spec
22 Jan 2015   #3
abyrne

Windows 7 Home Premium 64bit
 
 

Yeah, it's definitely 64 bit.

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


My System SpecsSystem Spec
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22 Jan 2015   #4
oscer1

win 7 64 bit
 
 

hi, test each ram slot. so put one stick of ram in then test then take that ram stick out and test other slot do they both work with the same ram stick
My System SpecsSystem Spec
22 Jan 2015   #5
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

For sure Windows is only seeing 4 gigs of ram and your hard ware is a little high by about 4X. (gray)

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.

You have a laptop so someone else will have to help with ram settings in the bios. I don't do laptops.
My System SpecsSystem Spec
22 Jan 2015   #6
Thomas1963

WIN 7 PRO 64
 
 

what version of windows are you running ?

is it 32 bit or 64 bit os?
My System SpecsSystem Spec
22 Jan 2015   #7
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

From the OP post #3

Quote:
Yeah, it's definitely 64 bit.
My System SpecsSystem Spec
22 Jan 2015   #8
Thomas1963

WIN 7 PRO 64
 
 

check and see if there is a bios update?

Very Strange

Good Luck
My System SpecsSystem Spec
23 Jan 2015   #9
dsperber

Windows 7 Pro x64 (1), Win7 Pro X64 (2)
 
 

Install and run CPU-z.

Then look at the MEMORY tab. Also look at the SPD and cycle through the memory slots, to see if your two 4GB cards are actually seen.

Post screenshots please.
My System SpecsSystem Spec
23 Jan 2015   #10
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Install and run CPU-z.

Is a great idea.
My System SpecsSystem Spec
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 8gb ram only reading as 4gb




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