Pc tres lent

bonjour depuis l'installation de windows 7 mon pc est lent pour ouvrir les pages lire les video j'ai windows defender avast et malwarerebyt voici un rapport adwcleaner si une personne peut me donner des renseignements merci
# AdwCleaner v4.101 - Rapport créé le 15/11/2014 à 10:49:13
# Mis à jour le 09/11/2014 par Xplode
# Database : 2014-11-13.1 [Live]
# Système d'exploitation : Windows 7 Home Premium Service Pack 1 (32 bits)
# Nom d'utilisateur : Philippe & Valérie - PC_VAL_PHIL
# Exécuté depuis : C:\Users\Philippe & Valérie\Downloads\adwcleaner_4.101.exe
# Option : Nettoyer

***** [ Services ] *****


***** [ Fichiers / Dossiers ] *****


***** [ Tâches planifiées ] *****


***** [ Raccourcis ] *****


***** [ Registre ] *****

Valeur Supprimée : HKCU\Software\Mozilla\Firefox\Extensions [{442718d9-475e-452a-b3e1-fb1ee16b8e9f}]

***** [ Navigateurs ] *****

-\\ Internet Explorer v11.0.9600.17420


-\\ Mozilla Firefox v33.1 (x86 fr)

[xlubqr0r.default-1415721433650\prefs.js] - Ligne Supprimée : user_pref("extensions.dashlane.safesearchcapable", false);

*************************

AdwCleaner[R0].txt - [3126 octets] - [24/10/2014 19:01:49]
AdwCleaner[R10].txt - [1561 octets] - [24/05/2014 17:32:58]
AdwCleaner[R11].txt - [2285 octets] - [24/05/2014 18:45:25]
AdwCleaner[R12].txt - [1809 octets] - [25/05/2014 14:46:52]
AdwCleaner[R13].txt - [1928 octets] - [02/06/2014 14:13:07]
AdwCleaner[R14].txt - [5056 octets] - [14/09/2014 16:10:41]
AdwCleaner[R15].txt - [2215 octets] - [30/09/2014 12:59:32]
AdwCleaner[R16].txt - [2337 octets] - [09/10/2014 13:40:11]
AdwCleaner[R1].txt - [4737 octets] - [26/10/2014 19:30:09]
AdwCleaner[R2].txt - [2537 octets] - [03/11/2014 15:50:41]
AdwCleaner[R3].txt - [2559 octets] - [10/11/2014 19:33:48]
AdwCleaner[R4].txt - [2788 octets] - [15/11/2014 10:44:35]
AdwCleaner[R6].txt - [1834 octets] - [25/04/2014 12:51:52]
AdwCleaner[R7].txt - [1629 octets] - [29/04/2014 15:12:03]
AdwCleaner[R8].txt - [1320 octets] - [18/05/2014 15:21:28]
AdwCleaner[R9].txt - [1440 octets] - [20/05/2014 13:01:35]
AdwCleaner[S0].txt - [3181 octets] - [24/10/2014 19:06:59]
AdwCleaner[S10].txt - [1624 octets] - [24/05/2014 17:34:19]
AdwCleaner[S11].txt - [2353 octets] - [24/05/2014 18:46:53]
AdwCleaner[S12].txt - [1871 octets] - [25/05/2014 14:48:18]
AdwCleaner[S13].txt - [1990 octets] - [02/06/2014 14:14:33]
AdwCleaner[S14].txt - [4654 octets] - [14/09/2014 16:12:53]
AdwCleaner[S15].txt - [2277 octets] - [30/09/2014 13:01:49]
AdwCleaner[S1].txt - [4805 octets] - [26/10/2014 19:34:55]
AdwCleaner[S2].txt - [2586 octets] - [03/11/2014 15:55:50]
AdwCleaner[S3].txt - [2621 octets] - [10/11/2014 19:39:25]
AdwCleaner[S4].txt - [2481 octets] - [15/11/2014 10:49:13]
AdwCleaner[S6].txt - [1909 octets] - [25/04/2014 12:54:49]
AdwCleaner[S7].txt - [1695 octets] - [29/04/2014 15:13:51]
AdwCleaner[S8].txt - [1381 octets] - [18/05/2014 15:22:51]
AdwCleaner[S9].txt - [1501 octets] - [20/05/2014 13:03:02]

########## EOF - C:\AdwCleaner\AdwCleaner[S4].txt - [2781 octets] ##########