win 8 3gb usable ram even after MSCONFIG workround

  lonemascot 00:43 14 Jun 15

Just treated an old computer to 4 GB of RAM (max. motherboard could access) and windows 8.1 64 bit version.

I was expecting to see that only 3 GB was usable even though it recognised 4 GB was installed as I had done a bit of research before hand. I checked in Resource Monitor and as expected the system had reserved 1 GB for hardware leaving 3 GB available for normal use.

I open up msconfig and have tried to tick max memory at 4096mb, un-ticking it completely and restarting to find that the system still only uses 3GB.

My particular bios doesn't have an option for a remap and I'm now stumped as to how to make use of all 4 GB of ram.

Please help. Thanks

  Jollyjohn 09:54 14 Jun 15

Do you have onboard graphics? This may be using a significant amount of RAM

  Fruit Bat /\0/\ 10:02 14 Jun 15

"I checked in Resource Monitor and as expected the system had reserved 1 GB for hardware leaving 3 GB available for normal use."

You have answered your own question, there is nothing you can do to free up the system reserved memory.

  lonemascot 11:17 14 Jun 15

I have a geforce 8400 GS graphics card which has its own dedicated memory.

fruitbat - after a lot of googling it seems this is a common problem which nearly everyone else has seemed to solve with the MSCONFIG fix. Before I upgraded I had 3GB of RAM of which all of it was available for use. So why when I replace 2 x 1.5GB ram with 2 x 2GB ram does it now allocate 1GB to system use? It doesn't make sense.

  wee eddie 14:06 14 Jun 15

This is not a very practical answer as I don't know whether it will work or how to do it.

I know that you have a Graphics Card and don't need the On-board Graphics but have you disabled it?

  Fruit Bat /\0/\ 14:29 14 Jun 15

Disable Onboard graphics in the BIOS.

However if you GPU fails then its almost imposible to re-enable because you won't be able to see the BIOS.

  Jollyjohn 16:24 14 Jun 15

On some onboard graphics it is possible to set the amount of RAM it uses in the BIOS but don't make the same mistake I made and set it to zero because then, as fruitbat mentions, it is impossible to use onboard graphics if your GPU fails

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