ASUS P5N32 - SLI - Premium System Wont Post

I am having problems with this ASUS board not booting. All new system that booted about 5 times into BIOS kept hanging there. Flashed BIOS from 0401 to the latest 0503. It flashed properly, however on the reboot after the flash now nothing..repetitive 10 sec beeps, no BIOS at all. When I remove all RAM and boot it the beep changes to 1 long 2 short which according to ASUS is telling me BIOS is OK, just memory is bad..sigh. So back and forth between tech support....I Call ASUS they say it is RAM..call Corsair they say it is the MOBO. Asus says the RAM I am using is compatible even though it is not on the Qualified Vendor List. Systen did not run long enough in BIOS to even attempt to set memory timings, let alone anything else. Corsair said that this MOBO does not like 4 sticks of memory????? 8O Hello!! Why the does it have 4 slots then??? I am going to order another BIOS for my 7 day old MOBO. Any one else have any suggestions or similar issues with this Memory and Board? Because of my location..I am in the Arctic..so shipping things back and forth is expensive and time consuming..so I am trying to narrow the problem down.

System:

ASUS P5N32-SLI-Premium/WiFi

Corsair XMS2 TWIN2X2048-6400C4 2GB 2X1GB PC6400 DDR2-800 CL 4-4-4-12 240PIN Dual Channel Memory Kit

Corsair XMS2 6400 TWIN2XP2048-6400C4 PC2-6400 2GB 2X1GB DDR2-800 CL4-4-4-12 240P Dual Channel Memory

XFX GeForce 7950 GX2

Silverstone Strider ST75F 750W ATX12V 24PIN Modular Power Supply

E6700 Dual Core Processor

2- Seagate Barracuda 7200.10 500GB SATA2 3GB/S 7200RPM 16MB Cache

I have the exact problem. I have replaced every thing except the MOBO. Calling Asus tech support in the AM to get this resolved.

Have you tried replacing the Battery ?

Had the same problem . I tried all sorts , then read in the manual that this motherboard simply will not boot at all with a flat battery ,
Tested the Battery and yes it was flat , replacing it solved all my problems , .