4 out of 6 ram usable on w7 x64 please help

DIMM1: Corsair CMX6GX3M3C1600C7 2 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 MHz) (8-8-8-22 @ 592 MHz) (6-6-6-16 @ 444 MHz)

No i didnt check in the handbook if these exactly was certified : / tho cant imagine that being the problem

Enable Memory Remap in your BIOS

Illusionen said:

DIMM1: Corsair CMX6GX3M3C1600C7 2 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 MHz) (8-8-8-22 @ 592 MHz) (6-6-6-16 @ 444 MHz)

No i didnt check in the handbook if these exactly was certified : / tho cant imagine that being the problem

Here's a link to the Asus list (bottom file). I don't see the modules listed there that you have.

Although I've seen systems run with modules that were not on the approved list, it may be a problem as some of these X58 boards are finicky and going by what I've seen on the Internet in looking at your board, I'd go with approved modules.

i tried to find this option but without luck, i checked every singel tab there is in the bios without finding it :S

Illusionen said:

i tried to find this option but without luck, i checked every singel tab there is in the bios without finding it :S

Found this comment on the Asus support forum (Source: ASUSTeK Computer Inc.-Forum- Memory Remap (BIOS)):

Check under Ai Tweaker/Memory Configuration in the bios. Memory Hole Remapping should be enabled by default.

Normally I would suggest swapping the slots the memory modules are in, so if you have 6 slots (A1, A2, B1, B2, C1, C2) and you're currently using A1, B1 and C1, I'd suggest you try with the three modules in A2, B2 and C2. But I'm not sure if this is actually a hardware issue... It's a strange one.

Here's a random thought; do you have any 64-bit Linux installation CDs? Most of them allow you to boot off the disk and run the OS from a virtual drive without affecting Windows. If you do, try that and see how much memory it reports.

My theory here is if it shows 6GB, then something in Windows is causing this. If Linux also only shows 4GB, then it's not OS and more likely something in your BIOS or actual hardware.

hmm i will try those things and come back to you with the result, nice to get so much friendly help here ^^ ty alot for that : )

Illusionen said:

i tried to find this option but without luck, i checked every singel tab there is in the bios without finding it :S

I don't have memory remapping in the BIOS of my P6T either. From what I can find memory remapping is now done by default if the BIOS detects more than 4GB of memory, and no enable/disable function is now written into later BIOSs. This is from a conversation between someone with your problem and an Asus tech on their site. Can't confirm this beyond mine not having memory remapping and others with your problem being told to do this and not finding the BIOS option. The suggestion to this poster was to flash the BIOS to the latest.

Check the BIOS version (in the Start button Search box type system information then select it) and date then look at the Asus site to see if a later version is available and read what problems BIOSs since yours is said to solve. If you decide to go this route and you have never flashed a BIOS before you'll want to read your manual carefully and seek further help here. Screw up a BIOS flash and the motherboard can become a large paper weight.

OMG!!! im such a ****ing retard i cant even describe it, it actually showed that 1 of the dimms wasnt inserted propper, had reaaaal problems fitting the last dimm in there, even tho the cover snaped to place it wasnt actually fitted at the bottom 100% such a simple error by my part that i never actually noticed :P

Thank you all for your help tho, u have been most kind : )