WIN 7 Pro 64-bit and 4GB DDR2

[bosamar]

Missing RAM?

I ran WIN 7 Pro 32-bit and my MSI K9N Diamond showed 3GB of RAM.

Now I'm running WIN 7 Pro 64-bit and it still shows 3GB of RAM. I thought with 64-bit installed I'd see all 4GB of RAM?

[ai5000]

Yes, you should. I'm also running Win 7 Pro 64-bit with 4GB DDR2, it's showing I have 4.00 GB installed with 3.75 GB usable (because of the integrated graphics.) Was the 64-bit version a clean install?

[bosamar]

Yes, you should. I'm also running Win 7 Pro 64-bit with 4GB DDR2, it's showing I have 4.00 GB installed with 3.75 GB usable (because of the integrated graphics.) Was the 64-bit version a clean install?

Yes it was.

[Poci]

See if memory hole remapping is enabled in bios

[bosamar]

See if memory hole remapping is enabled in bios

It is enabled.

So far I've tried:

- Clearing CMOS
- Pulled 2x1GB sticks and rebooted (it showed 2048MB). Then shutdown and replace the other 2x1GB for a total of 4GB and rebooted; still seeing 3072MB at startup in bios and in Windows Properties on the desktop.
- Played with Bank Interleaveing and Software Memory Hole (Memory Remapping) in bios.

[-=SparX=-]

If the bios only sees 3072 then win7 wont see any more. time to check the motherboard manual on this one.
Is the bios up to date ?
Have you tested individual ram sticks ?
Can you try 2x2gig ?

heh, i see you are covering your bases in the msi forum also :-)

[bosamar]

Is the bios up to date ?
Have you tested individual ram sticks ?
Can you try 2x2gig ?

I flashed the bios from v1.7 to v1.9. No changes.

I will try all four sticks in Dual-Channel mode....1 & 3 then 2 & 4. That should tell me if the sticks are good and if all DIMM slots are good.

Thanks.

[bosamar]

I performed the following memory tests:

Dual-Channel Test#1
Placed 2x1GB DDR2 in DIMM1 & DIMM3, rotating through all 4 sticks
Results: 2048MB in bios, all four sticks good

Dual-Channel Test #2
Placed first two sticks in DIMM2 & DIMM4
Results: Failed to boot

Placed 3x1GB DDR2 in DIMM1, DIMM2, & DIMM3.
Results: 3072MB in bios

Placed 3x1GB DDR2 in DIMM1, DIMM3, & DIMM4.
Results: 2048MB in bios

I believe the DIMM4 slot is bad.

[bosamar]

Using CPU-Z I've confirmed that DIMM4 is dead.

[-=SparX=-]

Well that leaves you with two options i guess...
Either run 2x 2gig sticks or replace the motherboard (rma ?)

just a thought, does msi have a qualified vendors list for ram and is there any known issues for single sided and double sided ram installation etc with that board ?

[bosamar]

Well that leaves you with two options i guess...
Either run 2x 2gig sticks or replace the motherboard (rma ?)

just a thought, does msi have a qualified vendors list for ram and is there any known issues for single sided and double sided ram installation etc with that board ?

The RAM is on the approved list posted on their support page. I'm suspose to be able to go up to 8GB. I suspose I could run 3x2GB sticks for now.

Any suggestions for a new mainboard, keeping all of my current parts?

[3dfxrain]

Asus or Gigabyte branded one.

[-=SparX=-]

hehe, i'll narrow it down further and say gigabyte since i am a fanboy :-D

[3dfxrain]

lol the gigabyte can be nice for you, not quite sure which kind of motherboard, I suppose like the K9N Diamond? Gigabyte M59SLI-S5 is close to it.