Okay I have this tiny little problem. Half of my DX9 games crash within 15-20 minutes of being loaded up and half dont. I first noticed this with Lineage 2, but I noticed it with EVE Online yesterday and frankly its annoying. I spent a week with NCSOFT support trying to figure this out to no avail. This is what we did: Prime95 test (8 hours), memtest86 (18 hours), various driver versions for motherboard (nforce 3) and vga card (radeon 9800pro 128meg) reinstalling windows, defragmenting hdd, Various settings for swap file, varying levels of harware acceleration settings in display properties and dxdiag, various bios versions, disableing and enabling fast writes, 2 different verisons of windows (server 2003 and x64), Just recently I discoverd a hidden setting in the bios that overclocked the vga card and have since disabled it as I'm not a fan of overclocking. Hardware is as follows: AMD Athlon64 3500+ Winchester + Freezer 64 heatsink, 2x Crucial 512mb pc3200 RAM 2x Crucial 256mb pc3200 ram Radeon 9800 pro 128mb + vga silencer heatsink, Seagate 200GB SATA HDD, Maxtor 80GB ATA133 HDD, Pioneer 16X DVD-ROM (flashed region free) LG 4160RBB (flashed region free) MSI K8N Neo2 Platinum-54G (wireless lan card installed) SB Audigy 2 ZS OEM Coolermaster Cavalier case, Tagan 480W PSU (first revision not pci-e compatible revision) The only thing I havent tried is removing the 2x256 memory modules. I should perhaps try this as I have a feeling that ram slots 3&4 are picky at the best of times. So besides that last option can anyone think of anything else to try before I start saving up for a new PSU, Motherboard, RAM and VGA card? I'm out of ideas.