Bios and Windows only Detects 4GB Ram

Martok · 1 Jan 2010 at 02:55

Hi All

Currently built a new PC and for some reason the bios and windows only detects 4GB of ram when i have 6GB installed, However CPUID detects all Modules. Wonder if anyone could help please.

Spec
I7 920 DO
Asus Rampage 2 Extreme
Corsair Dominator GT 6GB (3x2GB) DDR3 PC3-16000C8 2000Mhz
ATI5870
Windows 7 Pro 32Bit

I have tried all the modules on there own and seem to work ok and chamged some voltages around in mobo mainly QPI/DRAM to 1.3 and DRAM to 1.65 and that did not work.

Martok · 1 Jan 2010 at 15:09

I understand that but the BIOS does not recognise the other module as well i can install a 64Bit O/S anytime i want.

Martok · 1 Jan 2010 at 15:59

After more experimentation after reseating CPU and moving the ram around i found out that is is slot c1 which is not been detected.

Martok · 1 Jan 2010 at 22:24

Everythings the latest. Now the motherboard wont even post switch it on nothing on the screen.

Martok · 2 Jan 2010 at 19:36

The board sets the memory at 1333mhz anyway. would have over clocked when i get everything stable but board is in for RMA now anyway,

Martok · 2 Jan 2010 at 21:04

I tried everything huge thread on asus forums did not help. Board would not post in the end so had to RMA it today.
I do have Vista 64Bit (ultimate Edition will use that) I was just checking what windows 7 was like.