Multiple Svchost.exe (5 Of Them), Explorer.exe At 100% CPU Activity, Winlogon.exe...

Alright this is really damn annyoying, the pc runs incredibly slow, when I look in task manager, explorer.exe is using 97% of the CPU, so I end the proccess and start a new one, then winlogon.exe runs at 97% CPU usage and this proccess can't be ended, and I noticed there are multiple "svchost.exe" about 5 actually, I even reinstalled the operating system about 3 times and the computer still has the problem. I looked all over the internet and I can't find anything that can solve this. I have the log from HijackThis:

Logfile of HijackThis v1.99.1
Scan saved at 05:33:42, on 25/04/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16414)

Running processes:
C:WINDOWSSystem32smss.exe
C:WINDOWSsystem32winlogon.exe
C:WINDOWSsystem32services.exe
C:WINDOWSsystem32lsass.exe
C:WINDOWSsystem32svchost.exe
C:WINDOWSSystem32svchost.exe
C:WINDOWSsystem32spoolsv.exe
C:WINDOWSwanmpsvc.exe
C:WINDOWSExplorer.EXE
C:WINDOWSsystem32wscntfy.exe
C:WINDOWSSOUNDMAN.EXE
C:WINDOWSLTSMMSG.exe
C:WINDOWSSystem32sistray.EXE
C:WINDOWSSystem32khooker.exe
C:Program FilesApoint2KApoint.exe
C:Program FilesRealRealPlayerRealPlay.exe
C:Program FilesAOL 8.0aoltray.exe
C:Program FilesApoint2KApntex.exe
C:Program FilesEzButton VE 2.14EzButton.exe
C:Program FilesStarOffice6.0programsoffice.exe
C:Program FilesUniblueRegistryBooster2RegistryBooster.exe
C:Program FilesInternet Exploreriexplore.exe
C:Program FilesInternet Exploreriexplore.exe
C:Program FilesWindows DefenderMsMpEng.exe
C:WINDOWSsystem32wuauclt.exe
C:Program FilesWindows DefenderMSASCui.exe
D:TrojanHunterSetup.exe
C:DOCUME~1ROJANT~1LOCALS~1Tempis-8PDIO.tmpis-93JPV.tmp
F:autorun.exe
C:WINDOWSsystem32 askmgr.exe
C:WINDOWSsystem32NOTEPAD.EXE
C:Documents and SettingsRojan ThomasDesktopHijackThisHijackThis.exe ...