Missing RAM

10xOXR · 27 Jul 2008 at 14:19

Afternoon all,

Interesting (read annoying) issues I've just come across with my system.

I've got 4GB of installed RAM (2x 2GB Dual Channel) and am running Vista Home Premium 64-bit. It doesn't seem as though Windows is mapping all of my available memory though.

System properties shows that I've got 4GB installed, shown below: -

BIOS also shows that 4096MB is installed, but in Task Manager it's showing I only have 3.25GB: -

Have I gone mad? Where'd the other 771MB go then? I thought that by using a 64-bit OS I could use all of the available installed RAM!

Someone, please help!

10x...

Fire Wizard · 27 Jul 2008 at 14:24

Hello 10xOXR, you may have to go into the BIOS and enable an option called "Memory Remapping".

helmutcheese · 27 Jul 2008 at 14:38

@ 10xOXR, Since SP1 for Vista, it will report 4GB in the Sys Props anyhow, even on 32bit AFAIK.

The above peep has hopefully told you what's the issue (very common posting here).

I don't have such a setting on a Nvidia Mobo.

Happy · 27 Jul 2008 at 14:41

start>run>msconfig>boot>advanced otpions

Then there should be a box saying use maximum memory deselect that.

Biohazard · 27 Jul 2008 at 14:46

Happy said:
start>run>msconfig>boot>advanced otpions

Then there should be a box saying use maximum memory deselect that.

I have the same issue and that tick box is already deselected. :confused:

10xOXR · 27 Jul 2008 at 14:54

Hi guys, thanks for replying!

Hello 10xOXR, you may have to go into the BIOS and enable an option called "Memory Remapping"

Sadly, I can't find any option resembling this anywhere in my BIOS. I'm using a Foxconn P35AP-S motherboard.

Then there should be a box saying use maximum memory deselect that.

If had a look, and this option is already unchecked.

Tearing my hair out at this, any other thoughts?

PhoenixUK · 27 Jul 2008 at 15:06

10xOXR said:
Hi guys, thanks for replying!

Sadly, I can't find any option resembling this anywhere in my BIOS. I'm using a Foxconn P35AP-S motherboard.

If had a look, and this option is already unchecked.

Tearing my hair out at this, any other thoughts?

Yep, gets fixed in SP1 or maybe some later patch.

10xOXR · 27 Jul 2008 at 15:28

GAA!

Why can't I fix this??

TheRedZealot · 27 Jul 2008 at 17:13

What graphics card are you using btw?

10xOXR · 27 Jul 2008 at 20:09

I'm using the BFG GeForce 9600 GT OC 512MB.

Has no-one any other suggestions? Please... help me!

10xOXR · 31 Jul 2008 at 16:39

I've been searching thee forums but can't seem to find the solution. WOuld it be something in BIOS that I'm missing? Does anyone else have the same board as me as well as this problem?

Thanks,

10x...

Garyj881 · 31 Jul 2008 at 16:47

Bios update?

10xOXR · 31 Jul 2008 at 17:58

BIOS Update! What a wonderful thing!

Seems mine was a little buggy and the option that apparently sets the remapping (oddly called Memory 15-16MB hole) didn't work even when enabled. Since the update a few mins ago Vista Task Manager reports the full 4GB.

Many thanks to all that took the time to reply to this thread, your help was greatly appreciated.

10x...