I'm having some trouble with a Geforce 4 Ti4200 64Mb DVI that I bought recently. It seems to work fine until I run certain games where it seems to either lock up with nasty graphic artefacts, crash out to the desktop or reboot my computer completely. I'm running Windows XP with SP1 on an Athlon XP 2000 which has a mentor copper fan for cooling and which appears to run at 40ish degC. My motherboard is a Lex BN780 Ultra with 384MB SDRAm and the FSB is set to 133. I've updated all the drivers for the motherboard and for the graphics card: VGA Card Manufacturer MSI VGA Card Model Name MS-8870 VGA Card BIOS Vendor NVIDIA VGA Card BIOS Version 4.25.00.29.10 VGA Card Driver Version 3100 I've noticed it seems to be related to direct3d as for certain games the event viewer states errors such as: Faulting application main.exe, version 0.0.0.0, faulting module d3d8.dll, version 5.1.2600.1106, fault address 0x000462be. Also, i've tried games that run with OpenGL or DirectX and they appear to work in OpenGL but not DirectX. I've re-installed windows repeatedly and tried installing a 400W power supply but have so far had no success. I've moved my SDRAM memory modules about and that hasn't helped either. Is it likely to be a fault with the graphics card? Any suggestions on what the problem might be would be greatly appreciated. Cheers, Andy

You could check the DirectX working. In start menu select run and type dxdiag. This way you can check the way if directX is o.k. Does your AGP port support 2x or 4x acceleration? Is that setup correctly?

dxdiag seems to come up with everything ok. I had a look at the documentation and it says my motherboard goes up to 4x accel and the bios and is set to AUTO which I assume should be alright for 2x or 4x. I'll try setting it to 4x and see if that works. Thanks for your help

Strange. Tried reinstalling DirectX? Which version are you using anyway, 8.1?

I started with whatever version comes with XP (8.1a??) and tried 8.1b but neither work.