I have a newly built AMD 64 x2 4400+ system. Gigabyte GA-K8NXP-SLI mobo Gigabyte GV-3D1 gfx 4x512Mb Corsair VS DDR400 Dual channel Seagate 200Gb SATA hd Coolermaster 450W PSU Thermaltake Xaser III Multimedia keyboard & mouse Win XP Pro SP2, with updates All the latest drivers and BIOS. I payed a lot of money for this system but it has been ustable from day one. I've had it set up with various different configurations, formatted several times, overclock, underclock, but I can't pinpoint the problem. Any advice, please?