MSI 845PE (MS-6580 v2.x) & TWINX1024-2700LL

Question

MSI 845PE (MS-6580 v2.x) - 2 DIMM slots
Intel P4 2.4GHz
To date, I have been using a single stick of Nanya PC2700U 512MB.  It's been working fine but I wanted to upgrade to 1GB so I just purchased the Corsair TWINX1024-2700LL.  I stick the Corsair memory modules in and the machine will not POST.  
Here are the scenarios I have tried to date:
DDR1 = DDR slot1
DDR2 = DDR slot2
TWINX1 = TWINX module 1
TWINX2 = TWINX module 2
DDR1 = TWINX1/DDR2 = TWINX2   -> won't POST
DDR1 = TWINX1/DDR2 = *Empty*  -> Boots with 512MB of memory
DDR1 = TWINX2/DDR2 = *Empty*  -> Boots with 512MB of memory
DDR1 = *Empty*/DDR2 = TWINX1  -> won't POST
DDR1 = *Empty*/DDR2 = TWINX2  -> won't POST
DDR1 = *Empty*/DDR2 = Nanya    -> Boots with 512MB of memory
DDR2 = Nanya/DDR2 = *Empty*    -> Boots with 512MB of memory
DDR1 = TWINX1/DDR2 = Nanya     -> Boots with 1GB of memory
DDR1 = TWINX2/DDR2 = Nanya     -> Boots with 1GB of memory
DDR1 = Nanya/DDR2 = TWINX1     -> won't POST
DDR1 = Nanya/DDR2 = TWINX2     -> won't POST
These are my current Latency and Voltage settings.  I am not overclocking.
CAS # LAT = 2.5
RAS # Precharge = 3
RAS # to CAS # Delay = 3
Precharge Delay = 7
Burst Length = 4
DDR Power Voltage = 2.5V
Any ideas why I can't get the TWINX modules to work together?

Answer 1

Again; I must say that from Every Forum that I have Browsed. It seems to be That Just About Every INTEL Chipset Based MB, Does NOT Like to play with Low-Latency Modules Operating in Pairs, And when you try to operate the LL Stuff in a Dual-Channel Board, The Outcome is Even worse ...Is ther ANY WAY that you can RMA the LL RAM for someRegular Timed Corsair TWINX-2700? Or better yet RMA them for some Corsair TWINX-3200 Modules?....Because your Board will infact Perform MUCH Better with PC-3200 RAM instead of the PC-2700 Stuff. And Even if your Board does Not Officially Support PC-3200 (DDR-400) It Will Operate with the DDR-400 . And I am Sure of this Because we have 12 of the MSI-845PE's, And we have since replaced all the RAM in them to Corsair PC-3200 without a single issue, And Only 5 of our i845's Have 533MHZ Bus 2.66GHZ P4's, As the First 7 Boards that we Bought, we put the Oh so Hard to find 2.6GHZ 400MHZ Bus P4's.............Sean REILLY875