Memory not usable

[Jonathan Lemmens]

Hey guys,

 

A few days ago I upgraded from 8 to 16GB of Kingston Hyper X Fury 1866MHz DDR3 (in total, two sets of Dual-Channel kits, so 4x4GB). All 16GB are detected by the BIOS and CPU-Z, and Memtest completed 4 consecutive passes without any errors being detected.

However windows 7 (64bit) detects the 16GB but says both in the system specs and in task manager that only 8GB are usable. Going with any combination of 2 sticks out of the 4, works perfectly fine.

 

Does anyone know what could cause this and how it can be fixed?

[Sintezza]

You could check if there is a memory limmit set to 8GB at boot up in Msconfig.

 

1 Open msconfig. (start run type msconfig and hit enter)

2 Go to the boot tab > Advanced options.

3 Uncheck max memory check box.

4 reboot system.

 

On a side note: Which version of Windows 7 do you have?

[ApolloX75]

Windows 7 Home Basic caps out at 8GB.

Windows 7 Home Premium caps at 16GB.

Windows 7 Professional caps at 192GB.

 

I would say if your BIOS and CPU-Z both see the RAM, then you're probably running Home Basic.

[Jonathan Lemmens]

6 minutes ago, Sintezza said:

You could check if there is a memory limmit set to 8GB at boot up in Msconfig.

 

1 Open msconfig. (start run type msconfig and hit enter)

2 Go to the boot tab > Advanced options.

3 Uncheck max memory check box.

4 reboot system.

 

On a side note: Which version of Windows 7 do you have?

I have Win7 Home Basic 64bit

 

The max memory box was already unchecked, when i checked it, it´s default setting was 16GB but that didn´t make a difference after restarting.

[Jonathan Lemmens]

Just now, ApolloX75 said:

Windows 7 Home Basic caps out at 8GB.

Windows 7 Home Premium caps at 16GB.

Windows 7 Professional caps at 192GB.

 

I would say if your BIOS and CPU-Z both see the RAM, then you're probably running Home Basic.

I see, I do have Home Basic. 

 

Thanks, I guess this is solved after I reinstall windows.

[Sintezza]

3 minutes ago, Jonathan Lemmens said:

I see, I do have Home Basic. 

 

Thanks, I guess this is solved after I reinstall windows.

 

Yeah if you have Home Basic then you are limmited to 8GB indeed.

If you have the ability to install Home premium X64 or better then that might solve your issue most likely.

[Jonathan Lemmens]

6 minutes ago, Sintezza said:

 

Yeah im not fully sure if those numbers are accurate.

But if you have Home Basic then you might be verywell limmited to 8GB indeed.

If you have the ability to install Home premium X64 or better then that might solve your issue.

I have, and I will. I don´t know why I installed Home Basic in the first place  

 

Thanks again!