Il ne faut pas formater, ça reviendrait à tout recommencer, et réinstaller windows, et les programmes, c'est long, et souvent on oublie de re-sécuriser correctement et on se fait réinfecter.

Est-ce que ton disque dur est défragmenté ?
Combien as-tu de mémoire vive (ram) ?
Fais un scan complet avec Antivir, mets en quarantaine ce qu'il trouve.

Mon disque dur est défragmenté, je viens de lancer une analyse avec ANTIVIR, en ce qui concerne la mémoire vive, voici ce que j'ai:

256MB
EMPTY
EMPTY

Each memory slot can hold DDR PC2700,DDR PC3200 with a maximum of 1GB per slot.*

*Not to exceed manufacturer supported memory.
• Maximum Memory Capacity: 3072MB
• Currently Installed Memory: 256MB
• Available Memory Slots: 2
• Number of Banks: 3
• Dual Channel Support: No
• CPU Manufacturer: GenuineIntel
• CPU Family: Intel(R) Pentium(R) 4 CPU 2.40GHz Mod]le 2, niveau 4
• CPU Speed: 2400 MHz

Je te communique dés que possible le résultat du scan avec ANTIVIR
a bientôt

Ok. 256 Mo pour XP c'est peu, le minimum syndical est 512 pour que ça aille bien.
Il va falloir en rajouter ou vraiment paramétrer au minimum, pour ça tu peux configurer les services windows : tuto les services windows.

Merci Falkra
Je suis allé faire un tour sur les tuto que tu m'as indiqués, c'est tout simplement extraordinaire. Par contre, il me reste pas mal de boulot à faire, mais c'est passionnant. En ce qui concerne la mémoire vive, je suis d'accord avec toi que ce serait une bonne chose d'en mettre un peu plus. Est-ce que 1024 serait possible à intaller (cela me permettrait peut être de passer prochainement à VISTA), et chez qui peut on en trouver, correspondant à mon matériel.

Avec mes remerciements pour tout ce que tu fais.
NB. Si je ne me connecte pas trop lundi, mardi et mercredi, c'est pour raisons professionnelles.
A bientôt
henrisaxer

Bonjour Falkra,

Analyse Antivir faite, à priori pas de virus, mais 3 Warnings, que dois-je en faire. Ci après tu trouveras le rapport d'Antivir
D'avance merci et à bientôt




AntiVir PersonalEdition Classic
Report file date: dimanche, 30. mars 2008 17:43

Scanning for 1169688 virus strains and unwanted programs.

Licensed to: Avira AntiVir PersonalEdition Classic
Serial number: 0000149996-ADJIE-0001
Platform: Windows XP
Windows version: (Service Pack 2) [5.1.2600]
Username: SYSTEM
Computer name: SQXER-GIE3ARKD8

Version information:
BUILD.DAT : 270 15603 Bytes 19.09.2007 13:32:00
AVSCAN.EXE : 7.0.6.1 290856 Bytes 23.08.2007 13:16:29
AVSCAN.DLL : 7.0.6.0 49192 Bytes 16.08.2007 12:23:51
LUKE.DLL : 7.0.5.3 147496 Bytes 14.08.2007 15:32:47
LUKERES.DLL : 7.0.6.1 10280 Bytes 21.08.2007 12:35:20
ANTIVIR0.VDF : 6.40.0.0 11030528 Bytes 18.07.2007 14:27:15
ANTIVIR1.VDF : 7.0.3.2 5447168 Bytes 07.03.2008 12:55:04
ANTIVIR2.VDF : 7.0.3.85 434176 Bytes 27.03.2008 12:55:04
ANTIVIR3.VDF : 7.0.3.92 20480 Bytes 28.03.2008 12:55:04
AVEWIN32.DLL : 7.6.0.78 3408384 Bytes 29.03.2008 12:55:04
AVWINLL.DLL : 1.0.0.7 14376 Bytes 26.02.2007 10:36:26
AVPREF.DLL : 7.0.2.2 25640 Bytes 18.07.2007 07:39:17
AVREP.DLL : 7.0.0.1 155688 Bytes 16.04.2007 13:16:24
AVPACK32.DLL : 7.6.0.3 360488 Bytes 29.03.2008 12:55:05
AVREG.DLL : 7.0.1.6 30760 Bytes 18.07.2007 07:17:06
AVARKT.DLL : 1.0.0.20 278568 Bytes 28.08.2007 12:26:33
AVEVTLOG.DLL : 7.0.0.20 86056 Bytes 18.07.2007 07:10:18
NETNT.DLL : 7.0.0.0 7720 Bytes 08.03.2007 11:09:42
RCIMAGE.DLL : 7.0.1.30 2342952 Bytes 07.08.2007 12:38:13
RCTEXT.DLL : 7.0.62.0 86056 Bytes 21.08.2007 12:50:37
SQLITE3.DLL : 3.3.17.1 339968 Bytes 23.07.2007 09:37:21

Configuration settings for the scan:
Jobname..........................: Complete system scan
Configuration file...............: c:\program files\avira\antivir personaledition classic\sysscan.avp
Logging..........................: low
Primary action...................: interactive
Secondary action.................: ignore
Scan master boot sector..........: on
Scan boot sector.................: on
Boot sectors.....................: C:,
Scan memory......................: on
Process scan.....................: on
Scan registry....................: on
Search for rootkits..............: off
Scan all files...................: All files
Scan archives....................: on
Recursion depth..................: 20
Smart extensions.................: on
Macro heuristic..................: on
File heuristic...................: medium

Start of the scan: dimanche, 30. mars 2008 17:43

The scan of running processes will be started
Scan process 'avscan.exe' - '1' Module(s) have been scanned
Scan process 'avcenter.exe' - '1' Module(s) have been scanned
Scan process 'epmworker.exe' - '1' Module(s) have been scanned
Scan process 'Generic.exe' - '1' Module(s) have been scanned
Scan process 'alg.exe' - '1' Module(s) have been scanned
Scan process 'CapabilityManager.exe' - '1' Module(s) have been scanned
Scan process 'hpgs2wnf.exe' - '1' Module(s) have been scanned
Scan process 'VirtualExpander.exe' - '1' Module(s) have been scanned
Scan process 'wmpnscfg.exe' - '1' Module(s) have been scanned
Scan process 'GoogleToolbarNotifier.exe' - '1' Module(s) have been scanned
Scan process 'ctfmon.exe' - '1' Module(s) have been scanned
Scan process 'jusched.exe' - '1' Module(s) have been scanned
Scan process 'avgnt.exe' - '1' Module(s) have been scanned
Scan process 'qttask.exe' - '1' Module(s) have been scanned
Scan process 'SOUNDMAN.EXE' - '1' Module(s) have been scanned
Scan process 'realsched.exe' - '1' Module(s) have been scanned
Scan process 'hpgs2wnd.exe' - '1' Module(s) have been scanned
Scan process 'PicasaMediaDetector.exe' - '1' Module(s) have been scanned
Scan process 'HpqCmon.exe' - '1' Module(s) have been scanned
Scan process 'Application Launcher.exe' - '1' Module(s) have been scanned
Scan process 'MSASCui.exe' - '1' Module(s) have been scanned
Scan process 'wmpnetwk.exe' - '1' Module(s) have been scanned
Scan process 'CALMAIN.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'nvsvc32.exe' - '1' Module(s) have been scanned
Scan process 'MDM.EXE' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'sched.exe' - '1' Module(s) have been scanned
Scan process 'explorer.exe' - '1' Module(s) have been scanned
Scan process 'avguard.exe' - '1' Module(s) have been scanned
Scan process 'spoolsv.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'MsMpEng.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'lsass.exe' - '1' Module(s) have been scanned
Scan process 'services.exe' - '1' Module(s) have been scanned
Scan process 'winlogon.exe' - '1' Module(s) have been scanned
Scan process 'csrss.exe' - '1' Module(s) have been scanned
Scan process 'smss.exe' - '1' Module(s) have been scanned
43 processes with 43 modules were scanned

Starting master boot sector scan:
Master boot sector HD0
[NOTE] No virus was found!

Start scanning boot sectors:
Boot sector 'C:\'
[NOTE] No virus was found!

Starting to scan the registry.
The registry was scanned ( '31' files ).


Starting the file scan:

Begin scan in 'C:\'
C:\hiberfil.sys
[WARNING] The file could not be opened!
C:\pagefile.sys
[WARNING] The file could not be opened!
C:\WINDOWS\ie7updates\KB933566-IE7\advpack.dll
[WARNING] The file could not be read!


End of the scan: dimanche, 30. mars 2008 18:51
Used time: 1:07:59 min

The scan has been done completely.

6705 Scanning directories
239173 Files were scanned
0 viruses and/or unwanted programs were found
0 Files were classified as suspicious:
0 files were deleted
0 files were repaired
0 files were moved to quarantine
0 files were renamed
3 Files cannot be scanned
239173 Files not concerned
921 Archives were scanned
3 Warnings
0 Notes

Ces warnings, ce n'est pas grave, windows bloque l'accès à certains fichiers, rien d'anormal.

Poste un nouveau log DiagHelp stp, et un log HijackThis frais, il y a eu des changements, on y verra plus clair.

Bonsoir Falkra,
Voici le nouveau rapport Highjack. Pour le Diaghelp, je te l'envoie demain dans l'après midi, je suis obligé de quitter maintenant. En tout cas, merci pour tout.
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 18:37:44, on 31.03.2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16608)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Canon\CAL\CALMAIN.exe
C:\WINDOWS\system32\rundll32.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Sony Ericsson\Mobile2\Application Launcher\Application Launcher.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\Unload\hpqcmon.exe
C:\Program Files\Picasa2\PicasaMediaDetector.exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe
C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIAAE.EXE
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Program Files\Windows Media Player\WMPNSCFG.exe
C:\Program Files\InterVideo\Common\Bin\WinCinemaMgr.exe
C:\WINDOWS\system32\VirtualExpander\VirtualExpander.exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnf.exe
C:\Program Files\Fichiers communs\Teleca Shared\CapabilityManager.exe
C:\Program Files\Fichiers communs\Teleca Shared\Generic.exe
C:\Program Files\Sony Ericsson\Mobile2\Mobile Phone Monitor\epmworker.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.ch/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://g.fr.msn.ch/0SEFRCH/SAOS01?FORM=TOOLBR
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\2.0.301.7164\swg.dll
O2 - BHO: Windows Live Toolbar Helper - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O3 - Toolbar: (no name) - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - (no file)
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: (no name) - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - (no file)
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\NeroCheck.exe
O4 - HKLM\..\Run: [AME_CSA] rundll32 amecsa.cpl,RUN_DLL
O4 - HKLM\..\Run: [EPSON Stylus D68 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIAAE.EXE /P23 "EPSON Stylus D68 Series" /O6 "USB002" /M "Stylus D68"
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [Sony Ericsson PC Suite] "C:\Program Files\Sony Ericsson\Mobile2\Application Launcher\Application Launcher.exe" /startoptions
O4 - HKLM\..\Run: [CamMonitor] C:\Program Files\Hewlett-Packard\Digital Imaging\\Unload\hpqcmon.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Picasa Media Detector] C:\Program Files\Picasa2\PicasaMediaDetector.exe
O4 - HKLM\..\Run: [Share-to-Web Namespace Daemon] C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [EPSON Stylus D68 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIAAE.EXE /P23 "EPSON Stylus D68 Series" /M "Stylus D68" /EF "HKCU"
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [WMPNSCFG] C:\Program Files\Windows Media Player\WMPNSCFG.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O4 - Startup: VirtualExpander.lnk = C:\WINDOWS\system32\VirtualExpander\VirtualExpander.exe
O4 - Global Startup: InterVideo WinCinema Manager.lnk = C:\Program Files\InterVideo\Common\Bin\WinCinemaMgr.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: &Windows Live Search - res://C:\Program Files\Windows Live Toolbar\msntb.dll/search.htm
O8 - Extra context menu item: Add to Windows &Live Favorites - http://favorites.live.com/quickadd.aspx
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx2.hotmail.com/mail/w2/pr02/re ... NPUpld.cab
O16 - DPF: {59136DB4-6CA3-4B40-8F2F-BBF84B6F1E91} (Attachment Upload Control) - https://img.web.de/v/mail/activex/mail_upload_1123.cab
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/FR-CH/a-U ... E_UNO1.cab
O16 - DPF: {5ED80217-570B-4DA9-BF44-BE107C0EC166} (Windows Live Safety Center Base Module) - http://cdn.scan.onecare.live.com/resour ... ase370.cab
O16 - DPF: {639658F3-B141-4D6B-B936-226F75A5EAC3} (CPlayFirstDinerDash2Control Object) - http://www.shockwave.com/content/dinerd ... 0.0.67.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupda ... 0119774156
O16 - DPF: {A90A5822-F108-45AD-8482-9BC8B12DD539} (Crucial cpcScan) - http://www.crucial.com/controls/cpcScanner.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMe ... loader.cab
O16 - DPF: {BFF1950D-B1B4-4AE8-B842-B2CCF06D9A1B} (Zylom Games Player) - http://game08.zylom.com/activex/zylomgamesplayer.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/Me ... b56907.cab
O16 - DPF: {DC75FEF6-165D-4D25-A518-C8C4BDA7BAA6} (CPlayFirstDinerDashControl Object) - http://gamenextfr.oberon-media.com/onli ... 0.0.80.cab
O23 - Service: AntiVir PersonalEdition Classic Scheduler (AntiVirScheduler) - Avira GmbH - C:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: AntiVir PersonalEdition Classic Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: Canon Camera Access Library 8 (CCALib8) - Canon Inc. - C:\Program Files\Canon\CAL\CALMAIN.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe

--
End of file - 9096 bytes

Bonsoir Falkra,

J'ai suivi et exécuté tous tes conseils, y compris ceux du tuto windows, j'ai vérifié ma connexion internet, il y avait un problème de configuration, qui est réglé. L'amélioration au niveau de la vitesse est excellente. Pour avoir mieux, je vais ajouter une barete de mémoire. sur ce point, si tu as un revendeur à me conseiller...
Je crois que l'on peut considérer le cas comme résolu.
Un très très grand merci, et peut être à une autre fois.
Avec mes plus respectueuses salutations.
henrisaxer

De très bonnes nouvelles.
si tu repasses, marque résolu dans le titre stp (en éditant le premier post, le titre est modifiable).

N'hésite pas, si tu as des questions.