Aide : erreur écran bleu

Bonjour, depuis peu mon ordinateur plante et comme je suis nul en informatique
j'implore votre aide.

ma confiiguration : - carte mere : Asus p5b prenium
- carte graphique : Nvidia Gefroce 8400 GT
- processeur : Intel core 2 duo E8400
et voila sa que l'ecran bleu m'affiche

"A problem has been detected and Windows has been shut down to prevent damage
to your computer.

The problem seems to be caused by the following file: nv4_disp.dll

KERNEL_MODE_EXCEPTION_NOT_HANDLED

If this is the first time you've seen this stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If this is a new installation, ask your hardware or software manufacturer
for any Windows updates you might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use safe mode to remove or disable components, restart
your computer, press F8 to select Advanced Startup Options, and then
select Safe Mode.

Technical Information:

*** STOP: 0x1000008e (0xc0000005, 0xbd17a4d7, 0xb31389ec, 0x00000000)

*** nv4_disp.dll - Address 0xbd1a2725 base at 0xbd012000 DateStamp 0x4cb9d749 "

si vous désirer savoir des informations supplémentaire que je n'ai pas citer dite le moi

merci d'avance de vos réponse