windows xp mis reporting memory

[flyingdocuk]

I have a oldish but very reliable RX403NG running windows xp home service pack 2 build 2600
I recently decided to splash out on some new memory and having found the board would accommodate a maximum of 1536mb went and ordered 2 extra 512 simms.
These installed no problem and the bios recognised and memory checked them no problem and yet when I right click on the computer icon and click properties - windows reports that I only have 1gb of memory.
If I check the system information it reports my total physical memory at 1536 and my available memory as 500.89 (where has all the memory gone) but still in the device manager I still only seem to have 1gb of memory

can this be rectified?
Is it worth bothering with - or is it insignificant?

thanks for looking

[kee-lo_]

How much RAM should you have?

[seb21__]

He has mixed a 1024MB SO-DIMM with a 512MB SO-DIMM.

Download Everest Home Edition .

Start Everest and click "Motherboard" > "Memory"

There you can see the correct physically RAM.
If it's 1536MB then you can ignore the information of the windows report.

BTW: If you have a shared graphicscard then you must add the VRAM to the physically RAM.

[kee-lo_]

Ahh I see

[flyingdocuk]

I have not mixed up 1024 with 512 - my mb has 3 slots, each of which holds a 512mb simm. the bios finds it ok and the msinfo32 finds it ok - its only windows that is a little short sighted and only reports 1gb memory

I have a seperate radeon9600 agp graphics card so the memory is not shared there either

thanks for looking

[flyingdocuk]

Have just run everest as you suggested and it is reporting only 1024mb of ram - but it is also detecting all 3 512 simms in situ
they are all pc2100 dds sdram and are identical in all respects except for one of then is a different manufacturer all else is compatible - so what is going on???

[seb21__]

Mmmh, start the Task manager and look at the pysical RAM.

Do you see 1048576KB or 1572864KB RAM. Maybe your VAIO supports on 1GB RAM.

[kee-lo_]

Does it have shared graphics?

[seb21__]

He has seperade Graphics card. Would me interstesting what is that for a thing. A USB graphicc ard? LOL, that would surprise me.

[kee-lo_]

Ooops sorry, missed that bit...

What does it say in the BIOS? If that says the correct data then I wouldn't worry about it.