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16gb ram, 4gb usable?

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October 22, 2013 7:44:58 PM

I have 16gb of ram, yet Windows 7 shows only 4gb is usable? This wasn't a problem until recently...I have Windows 7 64 bit Ultimate. What's going on? I tried restarting and shutting down but no luck. Any ideas?

More about : 16gb ram 4gb usable

October 22, 2013 7:53:34 PM

What are the modules installed is it 4, 4GB or 2, 8GB or a 16GB ram stick?
Does it show 16GB under the bios?
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a b $ Windows 7
a b } Memory
October 22, 2013 8:17:04 PM

Provide detailed spec of your pc.
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October 22, 2013 8:17:42 PM

static1120 said:
What are the modules installed is it 4, 4GB or 2, 8GB or a 16GB ram stick?
Does it show 16GB under the bios?


I have 2 Corsair Vengeance 8 gb of ram, adding up to 16gb.
And it shows 16gb of ram under my bios
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October 22, 2013 8:22:46 PM

Akashdeep said:
Provide detailed spec of your pc.


I have:

Geforce GTX 660 2gb
AMD FX 8 core 4ghz
Gigabyte 990fx motherboard
Corsair 2 sticks 8 gb of ram, adding to 16gb.

Windows 7 Ultimate 64bit
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a b $ Windows 7
a b } Memory
October 22, 2013 8:26:54 PM

Please provide the screenshot as following:

Right click on "Computer" icon at Desktop-> Then click on "Properties" -> Take the screenshot of System properties window.
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a b $ Windows 7
a b } Memory
October 22, 2013 8:58:04 PM

Your board model is UD7 or UD3?

Have you updated your BIOS to latest one?

Also Go to: MSConfig->Advanced tab>Maximum memory(check whether it is checked or not. if checked, uncheck it)
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October 22, 2013 9:02:29 PM

Akashdeep said:
Your board model is UD7 or UD3?

Have you updated your BIOS to latest one?

Also Go to: MSConfig->Advanced tab>Maximum memory(check whether it is checked or not. if checked, uncheck it)


UD3

And I haven't installed any updates for my bios I don't think. I installed them through the disc that came with it, but that may be outdated...

It's unchecked from msconfig

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a b $ Windows 7
a b } Memory
October 22, 2013 9:34:49 PM

Also make sure that in your Advance tab "BIOS", you have enabled remap feature.
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October 22, 2013 10:02:44 PM

Akashdeep said:
Please ensure you have F9 BIOS. Check versions here: http://www.gigabyte.com/products/product-page.aspx?pid=...

Don't download/upgrade the beta BIOS. only F9 version.


I tried to upgrade the bios, in which wouldn't work through my flash drive(says it wasn't the file or anything), so as another attempt I used @Bios and upgraded from the server. It didn't seem to work as it still states I am 990FXA UD3 F2, and it never changed even it said "Update completed, please restart"

I'm out of options now. I want to say it could be a virus because my pc was fine a week ago, with physical memory barely going over 30%. Now it's over 50% a lot due to my vigorous tasks that I bought the 16gb ram in the first place

I haven't tried the "remap" part because I don't know where that is, in my bios setup if I restart my pc?
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a b $ Windows 7
a b } Memory
October 22, 2013 10:08:06 PM

Remap option is in your BIOS option.

You must update your BIOS to latest one, i.e. F9 for your board as per Gigabyte's recommendation.

Also check clearing your CMOS, by battery mode and Jumper mode too.
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October 22, 2013 10:22:18 PM

Akashdeep said:
Remap option is in your BIOS option.

You must update your BIOS to latest one, i.e. F9 for your board as per Gigabyte's recommendation.

Also check clearing your CMOS, by battery mode and Jumper mode too.


It's probably not updating the right way, as I have downloaded it, but it then asks me to extract an exe image, getting the different files inside, in which none started nor worked.

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October 22, 2013 10:43:44 PM

Akashdeep said:
This is what Gigabyte recommend you how to update your BIOS: http://www.gigabyte.com/webpage/20/HowToReflashBIOS.htm...


@bios didn't work, it updates the same bios I currently have
@bios also says "Can not load ROM image from Bin file. Maybe the file size does not match", and once I think I found the file called "99FXAUD3.F9" it stops responding

for the cherry on top, I try q-flash, and it tells me "Invalid bios file" or something like that. I don't think there is a way to update my bios, unless it's where it should be. The worse part is going through this frustration and it probably won't be the answer to my 16gb/4gb usable issue.

I may try to take the cmos battery out and try that maybe, resetting it.
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a b $ Windows 7
a b } Memory
October 22, 2013 10:46:27 PM

I have already asked you to clear CMOS. You didn't do it yet.
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October 22, 2013 11:08:20 PM

Akashdeep said:
I have already asked you to clear CMOS. You didn't do it yet.


Cleared CMOS, no luck. On top of that, I figured since it is F2, maybe try F3 instead of F9 since F9 refused to work, even F3 doesn't work, giving me "invalid bios image" or file. I'm starting to think reinstalling windows is the last resort
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a b $ Windows 7
a b } Memory
October 22, 2013 11:24:05 PM

Reset CMOS through jumper.
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October 23, 2013 12:08:55 AM

Akashdeep said:
Reset CMOS through jumper.


Thank you for sticking with me and trying to help out, but unfortunately, no luck for that either...Didn't work

My best bet is to update my bios, but there is no way it is letting me, always telling me "invalid bios image"

No luck.
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a b $ Windows 7
a b } Memory
October 23, 2013 12:50:45 AM

Which way to used to update your bios?

Tell me in detail.
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October 23, 2013 1:48:56 AM

Akashdeep said:
Which way to used to update your bios?

Tell me in detail.

You mean which way have I used to update my bios? None, because I built this pc last week, so it is new. I haven't downloaded from the site until today, in which again, would not let me update anything. I only tried f9 and f3 though, so maybe the other images are a way to go.

I've tried qflash and through @bios if that's what you meant. @bios claimed to install it, but it remained f2 and didn't change.

If this helps, and I may have said it differently, but I was running 16gb ram fine all week long, until today or maybe even yesterday. I did no configurations within my motherboard or system, yet I however may have installed something that caused this. I don't know what could force/change hardware reserved though.
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a b $ Windows 7
a b } Memory
October 23, 2013 3:45:22 AM

You mean it was showing 16GB till yesterday or so?

Then it might be some virus or malware issue. Check your pc for virus and malwares.
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October 23, 2013 5:38:53 AM

If you dont want to go the long way to fix it the simplest way to fix it is by doing a clean fresh install of windows 8 again if you still have the same problem after a clean install then its a problem with bios.
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October 23, 2013 1:07:42 PM

Akashdeep said:
You mean it was showing 16GB till yesterday or so?

Then it might be some virus or malware issue. Check your pc for virus and malwares.


Just scanned and removed some threats via AVG, however it may be too late, as it remains 16gb(4gb usable) even after restarting. I'm out of options except reinstalling windows or try the other bios images. I will try those.
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October 23, 2013 1:09:04 PM

static1120 said:
If you dont want to go the long way to fix it the simplest way to fix it is by doing a clean fresh install of windows 8 again if you still have the same problem after a clean install then its a problem with bios.


This may be the way to go, although going through another reinstall while clearing my hard drive may be all or nothing as the cause remains unknown for my 16gb(4gb usable) issue.

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October 23, 2013 1:15:46 PM

I have a quick update. When I decided to try to take the ram out and switch them(remember I have two sticks), the PC would not boot. This is probably normally, however it could possibly be a bad ram stick(although I just bought it 5 days ago), or the slots in the motherboard(very new too). I will have to see into this if that is the case.

EDIT: I swapped the ram to different slots, and the results remained the same, 16gb 4gb usable, even removed one, and got 8gb 4gb usable. I'm getting nowhere
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a b $ Windows 7
a b } Memory
October 23, 2013 7:50:55 PM

Still, you haven't updated your BIOS.

Download the .exe BIOS file. Extract the .exe in a clean formatted USB drive.

Then in BIOS, change USB as 1st Boot priority.

And then update your BIOS from the USB when you boot.
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October 23, 2013 7:54:54 PM

Look at your mother board manual and see what slots it says to put your RAM in.
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a b $ Windows 7
a b } Memory
October 23, 2013 8:00:07 PM

jacobc888 said:
Look at your mother board manual and see what slots it says to put your RAM in.


Assumed that he used the sticks in A1 & B1 slots.

I assume he is not that much noob too, to put the slots in A1 & A2. :D 
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October 23, 2013 9:10:44 PM

Akashdeep said:
Still, you haven't updated your BIOS.

Download the .exe BIOS file. Extract the .exe in a clean formatted USB drive.

Then in BIOS, change USB as 1st Boot priority.

And then update your BIOS from the USB when you boot.


Yeah, that's the thing, it continues to give me errors that I cannot update my bios. It just won't let me.
I will try the 1st boot priority then.
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October 26, 2013 1:56:34 PM

Akashdeep said:
jacobc888 said:
Look at your mother board manual and see what slots it says to put your RAM in.


Assumed that he used the sticks in A1 & B1 slots.

I assume he is not that much noob too, to put the slots in A1 & A2. :D 


I would like to update that the bios did NOT update because I actually have the up to date version. I have 990fxa ud3 rev4 instead of rev3, so that is why it did not update. With that said, I am out of ideas completely, and can only guess I have either bad ram or a bad motherboard, even though both are fresh out of the box(not even 1-2 weeks old and they installed perfectly)
Here is a link that shows that I am on F2, the most up to date at this point:
http://www.gigabyte.us/products/product-page.aspx?pid=4...

What does anyone suggest? To add, like I said before, when I took one stick of ram out(making it 8gb max), it still remained 4gb usable, even trying a different slot.
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a b $ Windows 7
a b } Memory
October 26, 2013 9:46:39 PM

Re-installing OS might can solve your problem.

Otherwise no.
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