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only 8gb ram of 16gb usable half of the ram is hardware reserved even after formatting

  • Thread starter Thread starter Deleted member 216316
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Whats it show in the bios? 8 or 16

If its 16 load up a Linux live disk and see what it sees

And test that ram with Memtest 86
 
It's showing all 16GB Ram but for some reason it has 8GB hardware reserved, so not available. Found online:

Go to search and type msconfig. When that box opens go to boot tab and then advanced options button. Set the max memory value to 0 and uncheck the box. Click to save and restart the machine when prompt to do so
 
The uma video on this Asrock board only supports up to 1GB, 12.5% from the 8GB that the OP claims is missing in his system so that is not the whole problem obviously. Like what Tetras commented, run CPU-Z & open the SPD tab, look at slot 1, 2, etc until the fields are filled in & upload a screenshot of that here so we can confirm you haver a matched set of ram in your system.
 
What ram are you using?

I know that my ram which is stock 2133, when ran at 2400 with cas lower than 10 the system will only allow 8GB useable.
 
RAM is working just fine, this is no harware issue, try what @Caring1 said
 
Caring1 said:
It's showing all 16GB Ram but for some reason it has 8GB hardware reserved, so not available. Found online:

Go to search and type msconfig. When that box opens go to boot tab and then advanced options button. Set the max memory value to 0 and uncheck the box. Click to save and restart the machine when prompt to do so
Click to expand...
did you read what i said lmao

Bomby569 said:
RAM is working just fine, this is no harware issue, try what @Caring1 said
Click to expand...
it was already unchecked as always

Jetster said:
Whats it show in the bios? 8 or 16

If its 16 load up a Linux live disk and see what it sees

And test that ram with Memtest 86
Click to expand...
i cant see how much ram i have in bios but system info and all other thing says 16gb totall
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1639761153034.png
 
need SPD slot2
the fact that you are in single channel when you have two sticks immediately tells me there is something wrong with the memory kit or the kit is not compatible with the board
 
take the memory out and take a picture of both sticks both sides and upload it here
make sure to get the lables clearly
 
OneMoar said:
take the memory out and take a picture of both sticks both sides and upload it here
make sure to get the lables clearly
Click to expand...
ok.. also when i take a ram out the pc cannot be opened until i reset cmos why does this happen
 
bad or incompatible stick of ram likely the latter
 
Check also in boot configuration if there aren't any mem restricting options - bcdedit /enum all /v
 
Yeah "Single channel" you got some bad memory, or the memory controller is bad. My guess is it's the board or maybe they are not a match set

Pro tip, instead of doing a screen capture use the windows snipping tool. Just type Snip in the search bar.

then new, drag your curser across the part you want to capture a shot of, then save
 
Jetster said:
Yeah "Single channel" you got some bad memory, or the memory controller is bad. My guess is it's the board or maybe they are not a match set

Pro tip, instead of doing a screen capture use the windows snipping tool. Just type Snip in the search bar.

then new, drag your curser across the part you want to capture a shot of, then save
Click to expand...
the mouse cant hold more than 2 seconds

Tetras said:
Recently? Did they seller not test the PC before they sent it?
Click to expand...
idk
 
OneMoar said:
take the memory out and take a picture of both sticks both sides and upload it here
make sure to get the lables clearly
Click to expand...
now i have unplugged every single chable and removed everything then did a ternal paste again and still same nothing changed
 
Two 8GB sticks of DDR3?
 
Chiron_853 said:
yes

all of them same model everything same
Click to expand...

If I recall correctly, CPU-Z did not report dual channel

and at one point reported DDR3 and at another DDR3L
 
Some low end WIN7 versions have an 8GB RAM limit. An older low end system might have this.

www.zdnet.com

Max memory limits for 64-bit Windows 7

While the maximum RAM limit for 32-bit Windows 7 editions is 4GB, when it comes to 64-bit editions, the amount of memory that the OS can address depends on which edition you are running.
www.zdnet.com www.zdnet.com

The other possibility is that the CPU needs 4 RAM modules to address 16GB. Older hardware may not be able to use RAM module sizes that didn't exist yet.
I would go to Userbenchmark.com and see if any others are getting 16GB on that MB. If you run your sytem there it will be put in with other similar systems.

 
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