Windows 10: 8GB (3.9GB Usable), Windows 10 x64 Bit

Hello, i tried to fix that problem with
- Switch RAM from the port
- Msconfig Checked Maximum Memory
- No Paging file
- Clear CMOS
- Update Bios
- Clean the yellow ram with rubber

and still not work until now, here's some screenshots about that problem










Please need help .. *Sad

System Specs
CPU : A10-7800
GPU : Gigabyte GT 730
Mobo: Biostar A58ML
RAM : Silicon Power 2x4GB (1600 MHz)
PSU : Enermax 500W

:)

 

Maximum RAM usable on windows 10 x64

I've upgraded my Windows 7 Ultimate x64 with 8GB RAM to Windows 10 Pro x64. But after upgrade to Windows 10 System Properties displayed that RAM detected is 8GB, but only 6,9GB usable. Why windows 10 x64 only detect 6,9GB RAM? In windows 7 8GB RAM detected
and usable

 

What's the maximum RAM support for Windows 10 Home Edition and Professional OS

Okay, so Windows 10 x64 allows up to 128Gb. I'm running Win10 64bit Home edition and have 16Gb installed, but only 8Gb is usable. How come?

 

If you check on the Task Manager page you will see that there is an entry for the memory which indicates Hardware reserved memory is 4.1GB. Now this is most unusual and much higher than it should be. It suggests to me that one of the memory sticks or the slots is faulty. Try them each individually in each of the slots and note what the Hardware reserved memory is in each case. This should help identify what is faulty.

Edit - the other possibility is that the RAM is simply not compatible. You MB manual should have a list of compatible RAM.

 

More here on that - if you search for 'hardware reserved' you will find a good number of results. (Ok, the following is for Win 7, but the concepts are there). Other people have experienced the same.

https://support.microsoft.com/en-us/...ased-computers

N.B. Setting your page file to zero will cause you problems.

 

Check, how much RAM does GPU have reserved in "Uma Frame Buffer Size".

 

8 GB (3,67 GB Usable)
256 mb shared

 

Okay i think i know the problem..
i tried install memory 1x4GB, the port DDR3_A1 work fine can boot, but port DDR3_B1 won't boot and tried install different memory still same won't boot.
so how can i fix this ? Please help *Sad

 

Also try reducing the graphics memory to something lower, like 2GB, in the setting that @TairikuOkami pointed out.

 

It would appear that one of the memory slots is faulty (DDR3_B1). If your motherboard is under warranty, you may be able to exchange it, otherwise the board needs replacing.

Removing the board and inspecting it for cracks or defects may identify the source of the problem.

Check for bad capacitors on the motherboard, with domed tops (should be flat) or those that are split or leaking, or dry solder joints on the main board.

It is just possible, but unlikely in this day and age, where contacts are gold plated, that one or more contacts on the slot are corroded, or more likely, contaminated with dust deposits.

There are electronic contact cleaning aerosols available (often most cheaply from automobile parts stores), and the method to clear any deposits from the contacts would require you to spray the slot and reinsert the memory, remove it and repeat several times, then clean up any dissolved materials staining the board with a solvent such as isopropyl alcohol, and wads of tissue.

You can get inexpensive fine bristle brushes used for "manicure nail art" from £ or $ stores, which can be used to dislodge dust from crevices, but ordinary household paint brushes may be used to dislodge large amounts of dust from motherboards, CPU coolers and system fans and power supply units.

 

Fafhrd is probably correct.

Just a note regarding CPU-Z showing 8 GB RAM. CPU-Z is merely showing the memory modules that it has identified. But a successful identification does not mean the memory is functional. There are all kinds of reasons why a module could be identified but unable to operate properly. For technical reasons it is not possible to check a memory module while Windows is running.

Incidentally the screenshot in post #1 shows that there is indeed a pagefile. A 5.9 GB commit limit with 3.9 GB usable RAM is explainable only be the existence of a 2 GB pagefile. The commit limit is RAM size + pagefile size, minus a small overhead. If not explicitly configured it must be a temporary pagefile created by Windows.

There are few legitimate reasons to disable the pagefile, and many not to. The existence of a pagefile does not in any way limit the size of usable RAM. I have seen claims that it does.

 

To add, there are programs that look for the Virtual Memory [paging file] and a .tmp/TEMP Folder during their installation and while running, place to temporarily store data.

 

I'm thinking the same. However, what's weird is the board is actually detecting the module in that is sees all 8 gig, but as noted is only using half. The other baffling thing is Hardware reserved is using 4gig. I would think if the board had a problem reading the memory it wouldn't be seen, nor "reserved" *Shock

All that said, I need to ask, are these matched memory modules? If there is a mismatch, are both modules the same voltage rating?

EDIT: OP really needs to check their memory module as I notice the memory is running in single channel when the board they have support dual channel memory - A58ML Ver. 7.0/7.2/7.4/7.A. Plus the memory the OP lists states it's 1600MHz, yet it's only running at 789.4, single channel. Should be dual channel (2 x 800).

 

You need to determine what the motherboard requires and use that. The owners manual should tell you what the RAM requirements.

 

In theory any combination of compatible memory modules should work. But things don't always work that way in the real world. Any mismatch in module size, speed, or other specifications can cause problems. Even modules with identical specifications from different manufacturers may not work. Sometimes modules will work alone, but they will not work together. OEM computers tend to be rather picky about the RAM modules that will work and have few if any options to deal with problems.

CPU-Z is just showing the memory modules it has identified. This does not imply that the modules are fully compatible with the computer or with each other or even fully functional, only that they can be identified. For technical reasons it is not possible to test memory modules while Windows is running.