K7N420 & 2x512 Registered ECC???

My K7N420 pro and Athlon XP1800 hasnt shown me any display yet (no beeps either), the diagnostic lights are 3-RED and 1-GREEN (number 3 GREEN) indicating its stuck on initializing key board controller according to the manual.
Could it be the RAM? I have 2x infineon 512 registered ECC 2100 DDR sticks "HYB25D256800AT-7", I know there is not a reason in the world to use ECC in such a board, but its just what i can use at the moment.
The same thing happens without the RAM, im confused weather its the board or incorect RAM.
The rest of the Hadrware is a 60gig IBM drive, standard logitech KB (about 2-3 years old), standard PS2 mouse and 17" monitor
Anyone else have something like this?
-no display or beeps
-stuck on one green light
Im sure its the RAM causing, but I cant find any documentation that says it can or cant take ECC.
any ideas/thoughts would be great

knavish,
I use only Mushkin 256MB Hi Perf PC2100 DDR SDRAM 222 in the nForce comps I build and it is 100% Rock Solid Stable.  It is the best RAM I have found for nForce.
I always put in two sticks for Twinbank.
Take Care,
Richard

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