Best way to trouble shoot is with another of the same card, however if
another
brand of card solves the problem that works too.... issue could be video
card
alone, motherboard alone, BIOS (also MB) or a combination there of.....

"SuperSenshi100" wrote in message
...
Would it be worthwhile to get a different card in hopes of alleviating the
situation entirely? I was looking at upgrading to an 8800GTS/GTX anyway.

Would it be a definite hardware defect issue and not just a compatibilty
problem?

"Spirit" wrote:

I suspect that the ATI is mapping itself into a memory area which is on
conflict
with Windows use. The 64 bit Vista can use all 4 gig and somehow the
ATI is not mapping itself in properly when you have 4 gig in play. This
could be the motherboard or the ATI card. Unless you try another
identical
card it will be hard to prove fault.

"SuperSenshi100" wrote in
message
...
I don't know why this happens, I've exhausted Microsoft and ATi trying
to
find a reason. When I use 4 GB of RAM in Vista 64-bit and install ANY
Catalyst driver for my X1950GT PCIe video card, I get random grey bars
on
my
screen using Aero (basic is just fine though), and when I use any kind
of
3D
application it works for a few seconds and then freezes entirely. If I
remove one stick of RAM leaving 2GB the problem is eliminated. The
later
the
release of the Catalyst driver, the longer it works before it freezes.
Here
are complete system specs:

ASUS M2A-MVP Crossfire-ready Motherboard (ATI SB600)
AMD Athlon 64 FX-62 2.8GHz dual-core CPU
4GB (2x2GB) G.SKILL DDR2 800
ATi X1950GT 512MB PCIe Graphics
500GB WD Caviar SE16 7200RPM SATA HDD
Microsoft Windows Vista Ultimate 64-bit Edition
(Currently running 32-bit due to the problem at hand)