Težave z grafiko

Pri igrah Menhunt in Pandora tomorrow (občasno tudi pri COD- če prav tega prej ni delal) mi PC blokne in se čez nekaj sekunt resetira. Vse kar sem ugotovil je to, da do tega pride naj bi prišlo zaradi grafe. Ob napaki se mi javi naslednje sporočilo:

//
// Watchdog Event Log File
//

LogType: Watchdog
Created: 2004-04-27 15:55:30
TimeZone: -60 - Central Europe Standard Time
WindowsVersion: XP
EventType: 0xEA - Thread Stuck in Device Driver

//
// The driver for the display device got stuck in an infinite loop. This
// usually indicates a problem with the device itself or with the device
// driver programming the hardware incorrectly. Please check with your
// display device vendor for any driver updates.
//

EaRecovery: 1
ShutdownCount: 16
Shutdown: 0
EventFlag: 1
EventCount: 1
BreakCount: 1
BugcheckTriggered: 1
DebuggerNotPresent: 1
DriverName: nv4_disp
DeviceClass: Display
DeviceDescription: NVIDIA GeForce4 Ti 4200
HardwareID: PCI\VEN_10DE&DEV_0253&SUBSYS_160310B0&REV_A2
Manufacturer: NVIDIA
DriverFixedFileInfo: FEEF04BD 00010000 0006000E 000A1628 0006000E 000A1628 0000003F 00000008 00040004 00000003 00000004 00000000 00000000
DriverCompanyName: NVIDIA Corporation
DriverFileDescription: NVIDIA Compatible Windows 2000 Display driver, Version 56.72
DriverFileVersion: 6.14.10.5672
DriverInternalName: nv4_disp.dll
DriverLegalCopyright: © NVIDIA Corporation. All rights reserved.
DriverOriginalFilename: nv4_disp.dll
DriverProductName: NVIDIA Compatible Windows 2000 Display driver, Version 56.72
DriverProductVersion: 6.14.10.5672


Probal sem že vse mogoče - nova inšatlacija sistema, driverji, čišenje registra - PC in komponent... NIMAM VEČ IDEJE. PROSIM ZA POMOČ!!!!!
Drugače sam sistem in druge aplikacije delajo OK.

LP, Osmi