Just got new PC, everything installed properly. Yet i try run AA this is what i get. Any solutions?

Build AmericasArmy[BuildDate:2008-01-25_BuildVersion:2.8.3]

OS: Windows XP 5.1 (Build: 2600)
CPU: GenuineIntel PentiumPro-class processor @ 2402 MHz with 2047MB RAM
Video: NVIDIA GeForce 8800 GT (6921)

IDirect3DVertexBuffer8::Lock failed(8007000E).

History: FALVoiceModule::NoteDestroy <- UALAudioSubsystem::NoteDetroy <- ULevel::DestroyActor <- (AuxCollisionCylinder Entry.AuxCollisionCylinder) <- UObject::ProcessEvent <- (StudentController Entry.StudentController, Function AGP.HumanController.Destroyed) <- ULevel::DestroyActor <- (StudentController Entry.StudentController) <- UPlayer::Destroy <- UViewport::Destroy <- (WindowsViewport Package.WindowsClient.WindowsViewport) <- UWindowsViewport::Destroy <- UObject::ConditionalDestroy <- (WindowsViewport Package.WindowsClient.WindowsViewport) <- UWindowsClient::Tick <- ClientTick <- UGameEngine::Tick <- Level Untitled <- UpdateWorld <- MainLoop

If at first you don't succeed, simply give up and let me do it!!!