/3GB SP2 BSOD!

I recently upgraded to 2.5GB of RAM and tried the " /3GB switch", but I keep
getting BSOD's stating "BAD_SYSTEM_CONFIG_INFO"
BEFORE the black Windows logo screen even loads.
It will not load into safe mode either.

Here is my boot.ini file:

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOW S
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Micro soft Windows XP
Professional" /fastdetect
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Micro soft Windows XP
Professional" /3GB /fastdetect

I am running XP Pro SP2 with all the latest updates.
I have run every memory test known to man, they all come up fine.
I have tested all of the 5 RAM modules I own and they are all good.
I have tried booting with each RAM module individually with the same results.
I have re-installed the KB826939 rollup.
I have tried the /USERVA command with various following numbers without
success.
I have tried it with only one boot line (which forced me to boot from the
windows cd and rebuild my boot file).
I have tried putting the /3GB after /fastdetect and taking out /fastdetect
alltogether, as I've seen recommended.
Nothing seems to work, something's holding me back.
I have only one PCI card (an an RME 9636 sound card), and an ATI Radeon 7000
64MB AGP (Not a FireGL) card in this machine.
Any ideas? Noone has been able to answer this for me.
Thanks in advance for even thinking about helping!
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jeswa
schematic.net
j(r e m o v e t h i
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AMD Athlon 64 3400+ . Asus KV8 Deluxe . 2.5gb Mushkin DDR LII V2