tu as deux antivirus

PRC - C:\Program Files\Microsoft Security Client\msseces.exe (Microsoft Corporation)    => Microsoft%Security Essentials
PRC - C:\Program Files\BitDefender\BitDefender 2011\vsserv.exe (BitDefender S.R.L.)    => BitDefender S.R.L. BitDefender Security Service

il faut en supprimer un 


Ferme toutes les fenêtres actives sur ton PC

 Relance OTL > Clic droit dessus > "Exécuter en tant qu'Administrateur".

[g]vérifie que la case "Rapport minimal" soit bien cochée.[/g]

Copie et colle le contenu de cette citation (en bleu ) dans la fenêtre "Personnalisation: 
[color=blue]


:otl 

 SRV - (AppMgmt) -- %SystemRoot%\System32\appmgmts.dll File not found
IE - HKCU\SOFTWARE\Microsoft\Internet Explorer\Main,Search Bar = 
IE - HKCU\SOFTWARE\Microsoft\Internet Explorer\Main,Search Page = 
IE - HKCU\..\SearchScopes,DefaultScope = 
FF - prefs.js..browser.search.useDBForOrder: "false" 
FF - prefs.js..browser.startup.homepage: "http://start.iminent.com/?appId=F1FCDAE6-1450-46E9-81D4-E8E7FCC27949" 
[2013/10/01 11:16:14 | 000,000,000 | ---D | M] (No name found) -- C:\Program Files\Mozilla Firefox\browser\extensions 
[2013/10/01 11:17:11 | 000,000,000 | ---D | M] (Default) -- C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd} 
[269 C:\WINDOWS\System32\*.tmp files -> C:\WINDOWS\System32\*.tmp -> ] 
[1 C:\Documents and Settings\Mathilde\Mes documents\*.tmp files -> C:\Documents and Settings\Mathilde\Mes documents\*.tmp -> ] 
[2010/03/24 11:34:44 | 000,053,248 | R--- | M] (Acresso Software Inc.) -- C:\Documents and Settings\Mathilde\Application Data\Microsoft\Installer\{6084C211-01A1-464E-97A0-09772E122B50}\NewShortcut2_60A3CA2E97AB4EAE82E5A8B6FE50C873.exe     
[2010/03/24 11:34:44 | 000,053,248 | R--- | M] (Acresso Software Inc.) -- C:\Documents and Settings\Mathilde\Application Data\Microsoft\Installer\{6084C211-01A1-464E-97A0-09772E122B50}\NewShortcut3_250B5DD793584E62966B2CA55CD7FE31.exe     
[2010/03/24 11:34:44 | 000,053,248 | R--- | M] (Acresso Software Inc.) -- C:\Documents and Settings\Mathilde\Application Data\Microsoft\Installer\{6084C211-01A1-464E-97A0-09772E122B50}\NewShortcut5_E131CE49F0AB4AFFBD46E947D2A7E8D6.exe     
[2010/03/24 11:34:44 | 000,053,248 | R--- | M] (Acresso Software Inc.) -- C:\Documents and Settings\Mathilde\Application Data\Microsoft\Installer\{6084C211-01A1-464E-97A0-09772E122B50}\NewShortcut6_C66F542C09384197820139E669715728.exe     

:files

C:\Documents and Settings\Mathilde\Application Data\Microsoft\Installer\{6084C211-01A1-464E-97A0-09772E122B50}\NewShortcut2_60A3CA2E97AB4EAE82E5A8B6FE50C873.exe     
C:\Documents and Settings\Mathilde\Application Data\Microsoft\Installer\{6084C211-01A1-464E-97A0-09772E122B50}\NewShortcut3_250B5DD793584E62966B2CA55CD7FE31.exe     
C:\Documents and Settings\Mathilde\Application Data\Microsoft\Installer\{6084C211-01A1-464E-97A0-09772E122B50}\NewShortcut5_E131CE49F0AB4AFFBD46E947D2A7E8D6.exe     
C:\Documents and Settings\Mathilde\Application Data\Microsoft\Installer\{6084C211-01A1-464E-97A0-09772E122B50}\NewShortcut6_C66F542C09384197820139E669715728.exe     



:Commands


[emptytemp]  
[/color]

Clique sur le bouton [color=red]"Correction". [/color]

Ne touche plus au PC avant son redémarrage en mode normal.
 
A l'ouverture du PC un rapport va s'ouvrir --> 04212011_xxxxxx.log ... Si ce n'est le cas tu le retrouveras sous le même nom sur le Bureau ou alors dans son dossier --> C:\_OTL 
Copie et colle ici en réponse le contenu de ce rapport

@++