Redémarrage intempestif de l'ordi (ce n'est pas un virus)

Est-ce que tu peux démarrer en mode "sans échec" ?
Touche "F8" au démarrage.

J'ai testé un à un tous les composants en interchangeant avec un autre PC: ram, alim, processeur, systemes d'exploitations.
C'est sûr maintenant, le problème vient de la carte mère, cependant c'est bizarre car je peux quand même, en effet, démarrer en mode sans échec...
Est-elle HS ? Il y avait un peu de dépot noir sur les condensateur... je ne sais pas si c'est normal...

Bon ben j'crois que j'ai trouvé ma réponse tout seul finalement sur le site HP:

CUSTOMER ADVISORY
Document ID: DS030320_CW01
Version: 0
Certain HP Desktop Computers May Fail to Start, Stop Responding, or Restart Unexpectedly


NOTICE: The information in this document, including products and software versions, is current as of the Release Date. This document is subject to change without notice.

Release Date: 2004-06-20



--------------------------------------------------------------------------------

description


Certain HP Desktop Computers (identified in the "Products Affected" section) may exhibit any or all of the following symptoms:

Stops responding (hangs or locks up)
Restarts intermittently without warning
Fails to start
These symptoms usually begin to occur after the computer has been in use for several years.


scope


This issue may affect any of the following desktop computers:

HP Brio BA410 PC
HP Brio BA600 PC and HP Brio BAx PC
HP Vectra VEi8 PC
HP Vectra VLi8 PC
HP Vectra VL400 PC
HP Vectra VL410 PC
HP Vectra VL600 PC
HP e-PC c10 and HP e-PC s10
HP E-Vectra PC

resolution


For Systems Under Warranty

If a desktop computer listed in the "Products Affected" section has a system board exhibiting expanding or leaking capacitors, contact your ASP or HP Customer Support to have the system board replaced.

For Systems Out of Warranty

If a desktop computer listed in the "Products Affected" section has a system board exhibiting expanding or leaking capacitors, contact HP Customer Support to obtain a replacement system board at no charge to the customer for the system board. System board replacement is valid for five years from the date of purchase of the system or Jan 1, 2007, whichever occurs first.