new system build...system instability only when i crank up the rez

[ill_take_two]

I am posting this for a friend of mine, he just built the system 4 weeks ago

MOBO
ASUS M2N-SLI Deluxe AM2 NVIDIA nForce 570 SLI MCP ATX AMD
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131013

CPU
AMD Athlon 64 X2 6400+ Windsor 3.2GHz Socket AM2 125W Dual-Core Processor
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103191

GPU
1 x EVGA 512-P2-N775-AR GeForce 8600GTS 512MB 128-bit GDDR3 PCI Express x16 HDCP Ready SLI Supported Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130291

RAM
two sets of
CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145034

HD
Seagate ST303204N1A1AS-RK 320GB 7200 RPM SATA 3.0Gb/s Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148317

DVD
ASUS 20x DVD-R Burner

PWR
PC P&C 750 crossfire edition

CPU cooler
Zalman 9500a

PCI fan VIZO-PCL-201 R

CASE
Raidmax SMiledon

that's the build running XP 32 bit

the problem in anything but low rez settings on games like COD4 , EQ2, it locks up with graphic glitches,

in Crysis even in low rez , lock up , freeze, graphic glitches,

since the raidmax PSU is crap i recomended changing that first, now its changed still having same problems though

any advice for him ? and no he has not contacted evga...

 

[Shadow703793]

Try increasing DDR2 RAM voltage. Those RAM run at 2.1v.

 

[evilshuriken]

Contact evga's rma department. Of gpu faults this stinks. Yes, hmmm.

 

[ill_take_two]

that was my first thought evilshuriken , infact he's sending the email now, i've allways heard evga was one of best cust serv , i'll post an update soon thanks