Windows 10 64bit 8GB RAM installed 3.98GB usable?

[ponder]

Any ideas?

 

[ProfA]

4gb being used by onboard gpu?

 

[absynth]

Memory Remapping in Bios enabled?

 

[Rickster]

Fake 64bit? lol


Check the bios, might be out of date, also check bios settings, I know there is a setting somewhere about extended memory support on these old boards. Some setting.

 

[Willie Trombone]

Weird. On-board graphics?

 

[w1z4rd]

GPU might be using it.

 

[Polymathic]

Maybe the CPU only supports 4GB?

 

[Johnatan56]

1. Reseat the RAM
2. Check BIOS settings
3. msconfig > Boot, select the OS and hit advanced, check what your maximum memory is set to, should be unticked.

What does your display in dxdiag say?

Maybe the CPU only supports 4GB?

Don't think so, it's 64 bit. Here is a video where the person used 16GB of RAM (2x8):

E.g. Intel's rating is usually whatever the largest that was addressable when the chip came out, I've used more memory on my old i7 950 when I still had it (was 24GB addressable as 6x4GB official as was largest when it came out, I had 2x8GB and 4x4GB a few years later).

 

[ponder]

Not my PC can only check on the weekend but I did a clean win10 64bit install for the person beginning of the year and it had full 8GB usage back then and no hardware has changed since then. The gpu is a 2gb gtx660.

Keep the suggestions comming.

 

[absynth]

Maybe the bios reset somehow, that's why I am still pointing towards the Memory Mapping being disabled.

https://www.compuram.de/blog/en/memory-remapping-what-is-it/

 

[ponder]

Weird. On-board graphics?

Nope, just googled it has no igpu.

 

[ponder]

Maybe the bios reset somehow, that's why I am still pointing towards the Memory Mapping being disabled.

https://www.compuram.de/blog/en/memory-remapping-what-is-it/

Will check but I think that usually defaults to 3.25gb if there's an issue.

 

[Willie Trombone]

Only 4GB usable of 16GB on Windows 10 64-bit

I have a system with Windows 10 64-bit installed. MSI 970A-G46 (I have not overclocked it) BIOS: v2.7 (Latest) AMD 8320 8-core processor (4 core/8logical) Windows v 10 Pro - 10.0.10586 build 10586

answers.microsoft.com

 

[absynth]

Will check but I think that usually defaults to 3.25gb if there's an issue.

Quite right, but can't think what else would reserve such a big chunk of ram.

 

[oldhat]

Have seen this a few times on AMD hardware. Once is was a failing cpu, sometimes bent/crimped pin(s) on cpu.

 

[|tera|]

Not my PC can only check on the weekend but I did a clean win10 64bit install for the person beginning of the year and it had full 8GB usage back then and no hardware has changed since then. The gpu is a 2gb gtx660.

Keep the suggestions comming.

Take a Linux Live disk.
If it detects 8GB you are gold.
Reformat and install 10. Get the 20H2 build.

 

[rambo919]

Uhm... assuming it has two mem sticks..... one of them died or is being misreaded?

 

[ponder]

Uhm... assuming it has two mem sticks..... one of them died or is being misreaded?

It has 2x 4GB. I'll reseat them on the weekend.

 

[FrikkieSwag]

1. Reseat the RAM
2. Check BIOS settings
3. msconfig > Boot, select the OS and hit advanced, check what your maximum memory is set to, should be unticked.

In bold is all you need to do

Or tick it and type in 8192

 

[Mystic Twilight]

Not my PC can only check on the weekend but I did a clean win10 64bit install for the person beginning of the year and it had full 8GB usage back then and no hardware has changed since then. The gpu is a 2gb gtx660.

Keep the suggestions comming.

Not sure if it applies to your cpu, certain early x64 amd cpu had support for 64 bit instruction sets but did not have support for virtual memory extensions for above 4gb, consumer ddr400 boards at the time supported 4 x 1gb ram at most.