RAM not detected

This is the foruth forum I've tried so I'm getting a little desperate (DFI forums thread, computer forum thread, and Corsair support forum thread here).
I'll statre my question again here anyway incase links don't work:

When I start the computer everything starts to whir and it seems normal. Then four diagnostic LEDs come on and move on to three LEDs but they stop at three. The monitor remains blank not detecting any activity and it goes into standby mode.

Diagnostic LED mobo Key:
4 lights=System start-up
3 lights= CPU detected
2 lights=DRAM detected
1 lights=VGA detected
0 lights=System boot

3 lights mean that it can't detect the memory . Any sugestions? Faulty product? I'm trying to get another stick to try in the comp or try this stick in another computer. Thanks for your time
I can't get into bios because the monitor being detected is after the RAM being detected. Supposedly the CMOS clear might get me to see the BIOS so I can change a setting but I'm not hopeful. Would a local computer store let me barrow a stick of ram just to tryout in shop? I'm going to basketball practice so I'll be back at 8ish PST jan. 3

My rig:
Processor- AMD Athlon 64 FX-55 San Diego 2.6GHz
CPU Cooling- ARCTIC COOLING Freezer 64 Pro
Power Supply- RP600V2-S-SL 600W
Case- Rosewill TU-155
Memory- CORSAIR ValueSelect 1GB
Mobo- DFI LANPARTY nF4 SLI-DR
Hard Drive- 120GB 7200 RPM 8MB Cache
Drive- SONY Black 16X DVD-ROM
GPU-EVGA GeForce 7600 GT / 256MB GDDR3
Monitor- SCEPTRE X20WG-Naga Black 20.1" 5ms

ANY IDEAS? THANKS IN ADVANCE

 

im not the best at this stuf, but if it has to do with your ram you might want to check the slots u got it in i.e. u might have 2 x 512mb so u might have them side by side or as dual channel so u might have got mixed up or your two peices of ram are differnt and u have set them as dual channel, happend to me, its just an idea and u might want to clean the connectors using some presuised air
hope u get it working
~scol

 

Stick to your Thread at DFI & follow the direction That's already been provided
That is DFI's Support site, The Answer to your problem is there
Corsair even has rep that frequents the site.

DFI Support is the best in the Business


I see two problem's your using Value Ram & a Crap PSU neither are recommended for your DFI MOBO