Xp Windows explorer will not open, CPU %100

[signtech]

I’m having problems getting my PC (XP Pro) working properly again, it seems that I cannot open anything related to Windows Explorer (Control panel, My Pc, ect.) and the CPU usage immediately jumps to 100% . The problem seemed to occur when I installed a Outlook back up program, I’ve already ran A/V, Spybot and HJT. Here is the log:

Logfile of HijackThis v1.97.7
Scan saved at 08:20:14 a.m., on 11/02/2004
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2600.0000)

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:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Executive Software\DiskeeperWorkstation\DKService.exe
C:\Program Files\DigitalPersona\Bin\DpHost.exe
C:\Program Files\Symantec\Norton Ghost 2003\GhostStartService.exe
C:\PROGRA~1\MICROS~3\MSSQL\binn\sqlservr.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\Program Files\Norton Personal Firewall\NISUM.EXE
C:\Program Files\Norton Utilities\NPROTECT.EXE
C:\Program Files\Speed Disk\nopdb.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\Program Files\Norton Personal Firewall\SymProxySvc.exe
C:\WINDOWS\System32\MsPMSPSv.exe
C:\Program Files\Norton Personal Firewall\NISSERV.EXE
C:\Program Files\Norton AntiVirus\SAVScan.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Tweak-XP Pro 3\AdBlocker.exe
C:\Program Files\Tweak-XP Pro 3\popup.exe
C:\Program Files\Microsoft Office\OFFICE11\WINWORD.EXE
C:\WINDOWS\msagent\AgentSvr.exe
C:\My Downloads\HijackThis.exe

O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O2 - BHO: (no name) - {F37F65DD-6D13-4506-93E3-628050EC2949} - C:\WINDOWS\cAoNE4f.dll
O3 - Toolbar: Copernic Agent - {F2E259E8-0FC8-438C-A6E0-342DD80FA53E} - C:\Program Files\Copernic Agent\CopernicAgentExt.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\My Downloads\Norton Antivirus 2004 Pro\Norton AntiVirus 2004 Pro\NAV\EXTERNAL\NORTON\APP\NAVSHEXT.DLL
O3 - Toolbar: searchsprint - {AEE46806-2C5A-4A4E-A5DD-B4531F64A187} - C:\WINDOWS\ox3U9o.dll
O4 - HKCU\..\Run: [BlockAds] "C:\Program Files\Tweak-XP Pro 3\AdBlocker.exe"
O4 - HKCU\..\Run: [Pop-Up-Blocker] "C:\Program Files\Tweak-XP Pro 3\popup.exe"
O8 - Extra context menu item: &Download with &DAP - C:\PROGRA~1\DAP\dapextie.htm
O8 - Extra context menu item: E&xportar a Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Search Using Copernic Agent - C:\Program Files\Copernic Agent\Web\SearchExt.htm
O8 - Extra context menu item: Web Savings - file://C:\Program Files\WebSavingsfromEbates\System\Temp\ebateswebsavings_script0.htm
O9 - Extra 'Tools' menuitem: Sun Java Console (HKLM)
O9 - Extra 'Tools' menuitem: Launch Copernic Agent (HKLM)
O9 - Extra button: Copernic Agent (HKLM)
O9 - Extra button: Referencia (HKLM)
O9 - Extra button: Related (HKLM)
O9 - Extra 'Tools' menuitem: Show &Related Links (HKLM)
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Windows Messenger (HKLM)
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/s...sh/swflash.cab

Since the occurrence of this problem I’ve tried restoring the system to earlier date without success and removed the backup program, but in safe mode Windows explorer functions without any problem.

I would really appreciate and advice that you could give me.

[Darkki]

Check in MSCONFIG
look at everything, not just startup, check services, system.ini, win.ini. Check them all for anything odd, look in your installed programs, uninstall anything you don't use, or don't recognize. Don't forget the actaul startup folder, I've had stuff hide itself in there too, the one on the ALL PROGRAMS menu. You could also, instead of restoring to an earlier date, try reinstalling XP over itself, or using repair on the XP disk.