Mes jeux ne se lance plus

onjour,
J’ai un gros probleme avec mes jeux videos, je ne peux plus les lancer.
Apparamment le probleme vient de ma carte: a chaque fois que je veux lancer un jeu( Ghost recon, Risen) il est écrit que je n’est pas une carte graphique suffisamment puissante. Cependant il y a quelques mois de cela je jouais a Crysis quasiment a fond.

Config: e8400 dual core
Carte mere: Asus p5kc
carte graphique: 9800gtx

J’ai déja effectuer une detection pour verifier si mes drivers était a jours, puis installer certains d’entre eux.

Merci de m’aider

nformations supplémentaire:


System Information

Time of this report: 10/6/2009, 19:54:15
Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.090206-1234)
Language: French (Regional Setting: French)
System Manufacturer: System manufacturer
System Model: P5KC
BIOS: BIOS Date: 03/18/08 14:44:50 Ver: 08.00.12
Processor: Intel® Core™2 Duo CPU E8400 @ 3.00GHz (2 CPUs)
Memory: 2048MB RAM
Page File: 445MB used, 3494MB available
Windows Dir: H:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.5512 32bit Unicode


DxDiag Notes

DirectX Files Tab: No problems found.
Display Tab 1: The file nv4_disp.dll is not digitally signed, which means that it has not been tested by Microsoft’s Windows Hardware Quality Labs (WHQL). You may be able to get a WHQL logo’d driver from the hardware manufacturer. DirectDraw test results: All tests were successful. Direct3D functionality not available. You should verify that the driver is a final version from the hardware manufacturer.
Sound Tab 1: No problems found.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.


DirectX Debug Levels

Direct3D: 0/4 (n/a)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (n/a)
DirectMusic: 0/5 (n/a)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)


Display Devices

Card name: NVIDIA GeForce 9800 GTX/9800 GTX+
Manufacturer: NVIDIA
Chip type: GeForce 9800 GTX/9800 GTX+
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0612&SUBSYS_057710DE&REV_A2
Display Memory: 512.0 MB
Current Mode: 1440 x 900 (32 bit) (60Hz)
Monitor: Écran Plug-and-Play
Monitor Max Res: 1600,1200
Driver Name: nv4_disp.dll
Driver Version: 6.14.0011.9056 (English)
DDI Version: unknown
Driver Attributes: Final Retail
Driver Date/Size: 7/30/2009 08:37:00, 5869056 bytes
WHQL Logo’d: No
WHQL Date Stamp: None
VDD: n/a
Mini VDD: nv4_mini.sys
Mini VDD Date: 7/30/2009 08:37:00, 7768864 bytes
Device Identifier: {D7B71E3E-4552-11CF-0E50-7C2503C2CB35}
Vendor ID: 0x10DE
Device ID: 0x0612
SubSys ID: 0x057710DE
Revision ID: 0x00A2
Revision ID: 0x00A2
Video Accel:
Deinterlace Caps: n/a
Registry: OK
DDraw Status: Disabled
D3D Status: Not Available
AGP Status: Not Available
DDraw Test Result: All tests were successful.
D3D7 Test Result: Not run
D3D8 Test Result: Not run
D3D9 Test Result: Not run

tas carte graphique est bien alimentee? pa 1 ou 2 broches de lalim.
Sinon format c:

Il y a deux broches branché sur la carte.
Il faut donc reformaté?

et l’alim c’est quoi?