Mein Pc hat dauernd ne CPU-auslastung von 80-100%.
Kann des n Virus sein?

Hilfe

Ohne so einem Log kann man wirklich nur raten...

Logfile of HijackThis v1.99.1
Scan saved at 02:28:12, on 25.12.2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Programme\Gemeinsame Dateien\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\system32\pctspk.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Programme\NETGEAR\WG111v2 Configuration Utility\RtlWake.exe
C:\Programme\NETGEAR\WG111v2 Configuration Utility\RtWLan.exe
C:\Steam\steam.exe
C:\Dokumente und Einstellungen\Demian\Desktop\hijackthis\HijackThis.exe
C:\WINDOWS\system32\wuauclt.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.web.de/
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Programme\Norton AntiVirus\NavShExt.dll (file missing)
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Programme\Norton AntiVirus\NavShExt.dll (file missing)
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [ccApp] C:\Programme\Gemeinsame Dateien\Symantec Shared\ccApp.exe
O4 - HKLM\..\Run: [ccRegVfy] C:\Programme\Gemeinsame Dateien\Symantec Shared\ccRegVfy.exe
O4 - HKLM\..\Run: [Advanced Tools Check] C:\PROGRA~1\NORTON~1\AdvTools\ADVCHK.EXE
O4 - HKLM\..\Run: [gcasServ] "C:\Programme\Microsoft AntiSpyware\gcasServ.exe"
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [ICQ Lite] C:\Programme\ICQLite\ICQLite.exe -minimize
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programme\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [Steam] "C:\Steam\Steam.exe" -silent
O4 - HKCU\..\RunOnce: [ICQ Lite] C:\Programme\ICQLite\ICQLite.exe -trayboot
O4 - Startup: ZMatrix.lnk = C:\Programme\ZMatrix\matrix.exe
O4 - Global Startup: WG111v2 Smart Wizard Wireless Setting.lnk = ?
O9 - Extra button: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Programme\ICQLite\ICQLite.exe
O9 - Extra 'Tools' menuitem: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Programme\ICQLite\ICQLite.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programme\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programme\Messenger\msmsgs.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Programme\Gemeinsame Dateien\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation Service (ccPwdSvc) - Symantec Corporation - C:\Programme\Gemeinsame Dateien\Symantec Shared\ccPwdSvc.exe
O23 - Service: Norton AntiVirus Auto Protect Service (navapsvc) - Unknown owner - C:\Programme\Norton AntiVirus\navapsvc.exe (file missing)
O23 - Service: Norton Unerase Protection (NProtectService) - Unknown owner - C:\Programme\Norton AntiVirus\AdvTools\NPROTECT.EXE (file missing)
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: PCTEL Speaker Phone (Pctspk) - PCtel, Inc. - C:\WINDOWS\system32\pctspk.exe
O23 - Service: ScriptBlocking Service (SBService) - Unknown owner - C:\PROGRA~1\GEMEIN~1\SYMANT~1\SCRIPT~1\SBServ.exe (file missing)
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Programme\Gemeinsame Dateien\Symantec Shared\SNDSrvc.exe

Bitte

> O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Programme\Norton AntiVirus\NavShExt.dll (file missing)
> O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Programme\Norton AntiVirus\NavShExt.dll (file missing)
> O23 - Service: Norton AntiVirus Auto Protect Service (navapsvc) - Unknown owner - C:\Programme\Norton AntiVirus\navapsvc.exe (file missing)
> O23 - Service: Norton Unerase Protection (NProtectService) - Unknown owner - C:\Programme\Norton AntiVirus\AdvTools\NPROTECT.EXE (file missing)
> O23 - Service: ScriptBlocking Service (SBService) - Unknown owner - C:\PROGRA~1\GEMEIN~1\SYMANT~1\SCRIPT~1\SBServ.exe (file missing)

Das sind unnötige Einträge.
Schonmal geschaut, welcher Prozess für die hohe Auslastung verantwortlich ist?

wo soll ich da schaun?

Vllt. im Windows-Taskmanager oder im Process Explorer?...