XP - très lent et se bloquant regulièrement

Bonjour,
j'ai récupéré le portable d'un copain qui ne fonctionnait plus. Grace à Avast et Spybot, j'ai enlevé virus et spyware.
Par contre le portable est incroyablement lent et l'ouverture d'une application peut prendre une dizaine de minutes. De plus impossible de faire fonctionner windows update.
voila le log Hijack This.
Avez vous des idées.
Merci par avance

Logfile of HijackThis v1.99.1
Scan saved at 09:58:33, on 26/09/2006
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\System32\igfxtray.exe
C:\WINDOWS\System32\hkcmd.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\802.11 Wireless LAN\802.11g Pen Size Wireless USB 2.0 Adapter HW.32 V1.10\SiSWLSvc.exe
C:\Program Files\802.11 Wireless LAN\802.11g Pen Size Wireless USB 2.0 Adapter HW.32 V1.10\WlanCU.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\snmp.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Documents and Settings\ARMAND\Bureau\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = https://www.free.fr/search/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.free.fr/freebox/index.html
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = wmplayer.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\System32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\System32\hkcmd.exe
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\\NeroCheck.exe
O4 - HKLM\..\Run: [MSChoExE] suge.exe
O4 - HKLM\..\Run: [Printer] C:\dipset.exe
O4 - HKLM\..\Run: [Spool] C:\windows\system\winrar.exe
O4 - HKLM\..\Run: [Start Uppings] mssupdate.exe
O4 - HKLM\..\Run: [NvCplScan] msc32.exe
O4 - HKLM\..\Run: [Microsoft Services] lssrv.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [Microsoft Windows 128bit Subsystem] C:\WINDOWS\System32\system12.exe
O4 - HKLM\..\Run: [MS Unix Binary] wrdpad05.exe
O4 - HKLM\..\RunServices: [MSChoExE] suge.exe
O4 - HKLM\..\RunServices: [Start Uppings] mssupdate.exe
O4 - HKLM\..\RunServices: [Microsoft Services] lssrv.exe
O4 - HKLM\..\RunServices: [MS Unix Binary] wrdpad05.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [MSChoExE] suge.exe
O4 - HKCU\..\Run: [Start Uppings] mssupdate.exe
O4 - HKCU\..\Run: [NvCplScan] msc32.exe
O4 - HKCU\..\Run: [MS Unix Binary] wrdpad05.exe
O4 - HKCU\..\RunServices: [Start Uppings] mssupdate.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Wireless Configuration Utility HW.32.lnk = ?
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O14 - IERESET.INF: START_PAGE_URL=https://www.free.fr/freebox/index.html
O17 - HKLM\System\CCS\Services\Tcpip\..\{A3AB4911-1EEB-40D1-B51B-69628D806A7A}: NameServer = 212.27.32.176,212.27.32.177
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O20 - Winlogon Notify: mljjg - C:\WINDOWS\System32\mljjg.dll (file missing)
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: SiS WirelessLan Service (SiSWLSvc) - Unknown owner - C:\Program Files\802.11 Wireless LAN\802.11g Pen Size Wireless USB 2.0 Adapter HW.32 V1.10\SiSWLSvc.exe
O23 - Service: SmartLinkService (SLService) - - C:\WINDOWS\SYSTEM32\slserv.exe
O23 - Service: Srv32 - Unknown owner - C:\WINDOWS\system32\srv32.exe (file missing)