Ordi qui rame au démarrage

Bonjour, mon ordi rame un peu pour charger le bureau au démarrage. Le chargement se passe normalement jusqu'à l'affichage du bureau. Là, mon ordi se bloque, le bureau apparait normalement mais pas moyen de faire quoi que ce siot. L'horloge ne tourne plus non plus. Au bout d'un certains laps de temps (20 minutes il y a 2 semaines, puis 15, puis 10 puis maintenant 6:30) la musique de démarrage se fait entendre et je peux me servir de mon ordi correctement.

Je suis allé voir dans le rapport windows update pour savoir ce qu'il se passe à chaques démarrages mais je ne comprends pas grand chose... je l'ai donc posté ici, si l'un de vous peut m'aider, je l'en remercie d'avance.

Voiçi le rapport, la partie en gras se répète 22 fois avant de passer à la suite



2010-02-17 19:33:05:781 1384 894 Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0100) ===========
2010-02-17 19:33:05:828 1384 894 Misc = Process: C:\WINDOWS\System32\svchost.exe
2010-02-17 19:33:05:828 1384 894 Misc = Module: C:\WINDOWS\system32\wuaueng.dll
2010-02-17 19:33:05:781 1384 894 Service *************
2010-02-17 19:33:05:828 1384 894 Service ** START ** Service: Service startup
2010-02-17 19:33:05:828 1384 894 Service *********
2010-02-17 19:33:05:843 1384 894 Agent * WU client version 7.4.7600.226
2010-02-17 19:33:05:843 1384 894 Agent * Base directory: C:\WINDOWS\SoftwareDistribution
2010-02-17 19:33:05:859 1384 894 Agent * Access type: No proxy
2010-02-17 19:33:05:859 1384 894 Agent * Network state: Disconnected
2010-02-17 19:33:52:328 1384 894 Agent *********** Agent: Initializing Windows Update Agent ***********
2010-02-17 19:33:52:328 1384 894 Agent *********** Agent: Initializing global settings cache ***********
2010-02-17 19:33:52:328 1384 894 Agent * WSUS server: <NULL>
2010-02-17 19:33:52:328 1384 894 Agent * WSUS status server: <NULL>
2010-02-17 19:33:52:328 1384 894 Agent * Target group: (Unassigned Computers)
2010-02-17 19:33:52:328 1384 894 Agent * Windows Update access disabled: No
2010-02-17 19:33:52:343 1384 894 DnldMgr Download manager restoring 0 downloads
2010-02-17 19:33:52:343 1384 894 AU ########### AU: Initializing Automatic Updates ###########
2010-02-17 19:33:52:343 1384 894 AU AU setting next detection timeout to 2010-02-17 18:33:52
2010-02-17 19:33:52:343 1384 894 AU AU setting next sqm report timeout to 2010-02-17 18:33:52
2010-02-17 19:33:52:343 1384 894 AU # Approval type: Scheduled (User preference)
2010-02-17 19:33:52:343 1384 894 AU # Scheduled install day/time: Every day at 3:00
2010-02-17 19:33:52:343 1384 894 AU # Auto-install minor updates: Yes (User preference)
2010-02-17 19:33:52:484 1384 894 AU Initializing featured updates
2010-02-17 19:33:52:484 1384 894 AU Found 0 cached featured updates
2010-02-17 19:33:52:484 1384 894 AU AU setting pending client directive to 'Install Approval'
2010-02-17 19:33:52:500 1384 894 AU AU finished delayed initialization
2010-02-17 19:33:52:953 1384 894 Report *********** Report: Initializing static reporting data ***********
2010-02-17 19:33:52:953 1384 894 Report * OS Version = 5.1.2600.2.0.65792
2010-02-17 19:33:53:031 1384 894 Report * Computer Brand = Dell Inc.
2010-02-17 19:33:53:031 1384 894 Report * Computer Model = Latitude D510
2010-02-17 19:33:53:031 1384 894 Report * Bios Revision = A02
2010-02-17 19:33:53:031 1384 894 Report * Bios Name = Phoenix ROM BIOS PLUS Version 1.10 A02
2010-02-17 19:33:53:031 1384 894 Report * Bios Release Date = 2005-07-04T00:00:00
2010-02-17 19:33:53:031 1384 894 Report * Locale ID = 1036
2010-02-17 19:33:53:031 1384 894 AU #############
2010-02-17 19:33:53:031 1384 894 AU ## START ## AU: Search for updates
2010-02-17 19:33:53:031 1384 894 AU #########
2010-02-17 19:33:53:031 1384 894 AU # WARNING: Failed to find updates with error code 8024001F
2010-02-17 19:33:53:031 1384 894 AU #########
2010-02-17 19:33:53:031 1384 894 AU ## END ## AU: Search for updates [CallId = {00000000-0000-0000-0000-000000000000}]
2010-02-17 19:33:53:031 1384 894 AU #############
2010-02-17 19:33:53:031 1384 894 AU Network connection not detected, subscribing for network reconnect for AU detection to happen
2010-02-17 19:34:07:515 1384 894 AU Launched new AU client for directive 'Install Approval', session id = 0x0
2010-02-17 19:34:08:015 4032 fc4 Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0100) ===========
2010-02-17 19:34:08:015 4032 fc4 Misc = Process: C:\WINDOWS\system32\wuauclt.exe
2010-02-17 19:34:08:015 4032 fc4 AUClnt Launched Client UI process
2010-02-17 19:34:08:093 4032 fc4 Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0100) ===========
2010-02-17 19:34:08:093 4032 fc4 Misc = Process: C:\WINDOWS\system32\wuauclt.exe
2010-02-17 19:34:08:093 4032 fc4 Misc = Module: C:\WINDOWS\system32\wucltui.dll
2010-02-17 19:34:08:093 4032 fc4 CltUI AU client got new directive = 'Install Approval', serviceId = {7971F918-A847-4430-9279-4A52D1EFE18D}, return = 0x00000000
2010-02-17 19:34:08:125 4032 fc4 CltUI AU client creating UI plugin, clsid={3809920F-B9D4-42DA-92E0-E26265E0FB89}
2010-02-17 19:34:08:203 4032 fc4 Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0100) ===========
2010-02-17 19:34:08:203 4032 fc4 Misc = Process: C:\WINDOWS\system32\wuauclt.exe
2010-02-17 19:34:08:203 4032 fc4 Misc = Module: C:\WINDOWS\system32\mucltui.dll
2010-02-17 19:34:08:203 4032 fc4 AUClnt WARNING: Shell_NotifyIcon failed (dwMessage=0x0, uFlags=0x3, hr=0x800705B4)
2010-02-17 19:34:08:203 4032 fc4 AUClnt WARNING: Shell_NotifyIcon failed (dwMessage=0x0, uFlags=0x3, hr=0x800705B4)
2010-02-17 19:34:08:203 4032 fc4 AUClnt WARNING: Shell_NotifyIcon failed (dwMessage=0x0, uFlags=0x3, hr=0x800705B4)
2010-02-17 19:34:08:203 4032 fc4 AUClnt WARNING: Shell_NotifyIcon failed (dwMessage=0x0, uFlags=0x3, hr=0x800705B4)
2010-02-17 19:34:08:203 4032 fc4 CltUI FATAL: Failed to show client UI, directive=7, hr=800705B4
2010-02-17 19:34:08:203 4032 fc4 AUClnt WARNING: Shell_NotifyIcon failed (dwMessage=0x2, uFlags=0x0, hr=0x800705B4)
2010-02-17 19:34:08:203 4032 fc4 AUClnt WARNING: Shell_NotifyIcon failed (dwMessage=0x2, uFlags=0x0, hr=0x800705B4)
2010-02-17 19:34:08:203 4032 fc4 AUClnt WARNING: Shell_NotifyIcon failed (dwMessage=0x2, uFlags=0x0, hr=0x800705B4)
2010-02-17 19:34:08:203 4032 fc4 AUClnt WARNING: Shell_NotifyIcon failed (dwMessage=0x2, uFlags=0x0, hr=0x800705B4)
2010-02-17 19:34:08:203 1384 894 AU AU received handle event
2010-02-17 19:34:08:203 1384 894 AU AU setting pending client directive to 'Install Approval'
2010-02-17 19:34:15:843 1384 894 AU Forced install timer expired for scheduled install
2010-02-17 19:34:15:859 1384 894 AU UpdateDownloadProperties: 0 download(s) are still in progress.
2010-02-17 19:34:15:859 1384 894 AU Setting AU scheduled install time to 2010-02-18 02:00:00
2010-02-17 19:34:23:218 1384 894 AU Launched new AU client for directive 'Install Approval', session id = 0x0

2010-02-17 19:39:41:328 968 228 Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0100) ===========
2010-02-17 19:39:41:328 968 228 Misc = Process: C:\WINDOWS\system32\wuauclt.exe
2010-02-17 19:39:41:328 968 228 AUClnt Launched Client UI process
2010-02-17 19:39:41:390 968 228 Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0100) ===========
2010-02-17 19:39:41:390 968 228 Misc = Process: C:\WINDOWS\system32\wuauclt.exe
2010-02-17 19:39:41:390 968 228 Misc = Module: C:\WINDOWS\system32\wucltui.dll
2010-02-17 19:39:41:390 968 228 CltUI AU client got new directive = 'Install Approval', serviceId = {7971F918-A847-4430-9279-4A52D1EFE18D}, return = 0x00000000
2010-02-17 19:39:41:406 968 228 CltUI AU client creating UI plugin, clsid={3809920F-B9D4-42DA-92E0-E26265E0FB89}
2010-02-17 19:45:19:296 3560 dec Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0100) ===========
2010-02-17 19:45:19:296 3560 dec Misc = Process: C:\WINDOWS\system32\wuauclt.exe
2010-02-17 19:45:19:296 3560 dec AUClnt Launched Client UI process