Bubba already posted a message regarding this but I thought it might need some emphasis.
Alert!! I found this on www.cluboverclockers.com who credits www.amdzone.com. Here is the description of the problem from the AMD site.
Microsoft Windows®2000 Patch for AGP Applications on AMD Athlon™ and AMD Duron™ Processors
Description of Issue
An issue has been identified that could result in the corruption of video data shared between AGP graphics adapters and AMD Athlon™ or AMD Duron™ processors when running Microsoft Windows®2000. This issue is independent of system chipset and has been observed when running Ziff-Davis 3D Winbench™2000 and Mad Onion 3DMark™ 2000 in benchmarking mode.
Solution
AMD and Microsoft have worked together to identify a patch that involves adding a key to the registry. To add the key run the registry key installation file below or add the registry key as detailed in Microsoft KnowledgeBase article Q270715. AMD recommends that AMD Athlon and AMD Duron users with AGP graphics adapters running Windows 2000 install this patch.
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Here is a link to get the patch.
http://www.amd.com/products/cpg/athlon-duron/amd_win2k_patch.html
Alert!! I found this on www.cluboverclockers.com who credits www.amdzone.com. Here is the description of the problem from the AMD site.
Microsoft Windows®2000 Patch for AGP Applications on AMD Athlon™ and AMD Duron™ Processors
Description of Issue
An issue has been identified that could result in the corruption of video data shared between AGP graphics adapters and AMD Athlon™ or AMD Duron™ processors when running Microsoft Windows®2000. This issue is independent of system chipset and has been observed when running Ziff-Davis 3D Winbench™2000 and Mad Onion 3DMark™ 2000 in benchmarking mode.
Solution
AMD and Microsoft have worked together to identify a patch that involves adding a key to the registry. To add the key run the registry key installation file below or add the registry key as detailed in Microsoft KnowledgeBase article Q270715. AMD recommends that AMD Athlon and AMD Duron users with AGP graphics adapters running Windows 2000 install this patch.
-----------------------------------------------------------
Here is a link to get the patch.
http://www.amd.com/products/cpg/athlon-duron/amd_win2k_patch.html