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Windows 7: Can see 8gb in BIOS, but only 4 useable

03 Jul 2014   #1
nolube

Windows 7 Ultimate 64 bit
 
 
Can see 8gb in BIOS, but only 4 useable

Hi there, I've done some reading and apparently I need to enable 'memory remap feature' in BIOS, but I cannot see it anywhere in the BIOS.

Please see photos/screeny attached and see if it makes any sense..

mobo: GA-P55A-UD3

8 X 2GB RAM




Attached Thumbnails
Can see 8gb in BIOS, but only 4 useable-img_0540.jpg   Can see 8gb in BIOS, but only 4 useable-img_0541.jpg  
Attached Images
Can see 8gb in BIOS, but only 4 useable-device.jpg 
My System SpecsSystem Spec
.
03 Jul 2014   #2
Indianatone

Windows 7 x64 Ultimate and numerous virtual machines
 
 

Hi Nolube and welcome to Seven forums. From what I can see from the screen shots of your bios you have 8 GB ram installed. The system is disabling 4g of it as the first screen shot states 4096 Mb as the total ram. 2 of your slots are not enabled. Try removing and reseating the ram (with the power off). Check in the BIOS if there is a setting to enable or disable the second ram channel.
My System SpecsSystem Spec
03 Jul 2014   #3
Slartybart

x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem
 
 

After following Indiantone's instructions, you might try resetting BIOS

F6: Fail-safe defaults
or
F7: optimized defaults
My System SpecsSystem Spec
.

03 Jul 2014   #4
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

In the Start Search type msconfig to open the System Configuration window, if UAC asks, allow it to run. Select the Boot tab and click the Advanced button. The BOOT Advanced Options window will open.
Uncheck the box for Maximum Memory if it is checked. Click OK, Apply and reboot for the change to take affect.


Also run the WEI, Windows Experience Index.
My System SpecsSystem Spec
03 Jul 2014   #5
nolube

Windows 7 Ultimate 64 bit
 
 

Hey there, thanks for your replies.

Have tried re-seating the RAM, also looked everywhere in the BIOS for such a thing. Couldn't find it, but I suspect it's in there somewhere?? I installed my flatmate's RAM (4 x 4gb sticks) and had the same issue 16gb RAM, with only 8gb useable..

Have tried updating the BIOS but the update files appear to be for 32-bit from here .. GIGABYTE - Motherboard - Socket 1156 - GA-P55A-UD3 (rev. 2.0)

Haven't tried resetting the BIOS though...

Also, ran the WEI.. see attached.

Cheers


Attached Thumbnails
Can see 8gb in BIOS, but only 4 useable-experience.jpg  
My System SpecsSystem Spec
03 Jul 2014   #6
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

You may find the setting under MIT, Advanced Memory Settings.
You may have a bad board too, run this exactly as told, i.e., RMA in different slots.

RAM (memory) test:
This will require memtest on a bootable CD or USB stick.
RAM - Test with Memtest86+
My System SpecsSystem Spec
03 Jul 2014   #7
Slartybart

x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem
 
 

Quote   Quote: Originally Posted by nolube View Post
.....
Have tried updating the BIOS but the update files appear to be for 32-bit from here .. GIGABYTE - Motherboard - Socket 1156 - GA-P55A-UD3 (rev. 2.0)

Haven't tried resetting the BIOS though
.....
BIOS is not bit wise

Before updating BIOS try resetting to defaults. You have two slots that are not enabled. I don't see why that would be the default.
My System SpecsSystem Spec
03 Jul 2014   #8
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Did you complete Gary's post #4?
My System SpecsSystem Spec
04 Jul 2014   #9
nolube

Windows 7 Ultimate 64 bit
 
 

Yes I tried resetting to default fail safe, also optimised default. Just running the ram checker now.


Attached Thumbnails
Can see 8gb in BIOS, but only 4 useable-image.jpg  
My System SpecsSystem Spec
04 Jul 2014   #10
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Let it run for the full 8 passes, unless you get any error, red lines at the bottom. If errors then go the single stick in each slot.

It shouldn't make a different, but Slot 1 RAM has a different part number unless it's a glitch in memtest.

Can see 8gb in BIOS, but only 4 useable-image.jpg


My System SpecsSystem Spec
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