desaparecieron algunos ICONOS de mi escritorio

desaparecieron algunos iconos de mi escritorio, que puedo hacer.

Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v8.00 (8.00.6001.19088)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Seagate\DiscWizard\DiscWizardMonitor.exe
C:\Program Files\Seagate\DiscWizard\TimounterMonitor.exe
C:\Program Files\Common Files\Seagate\Schedule2\schedhlp.exe
C:\Windows\SYSTEM32\taskeng.exe
C:\Windows\System32\mobsync.exe
C:\Windows\system32\wuauclt.exe
C:\Users\JOSE ROMERO\Desktop\Explorer.exe

O2 - BHO: Altavista Toolbar - {4E7BD74F-2B8D-469E-92EA-EC65A294AE31} - C:\PROGRA~1\ALTAVI~1\ALTAVI~1.DLL
O3 - Toolbar: Altavista Toolbar - {4E7BD74F-2B8D-469E-92EA-EC65A294AE31} - C:\PROGRA~1\ALTAVI~1\ALTAVI~1.DLL
O4 - HKLM\..\Run: [DiscWizardMonitor.exe] C:\Program Files\Seagate\DiscWizard\DiscWizardMonitor.exe
O4 - HKLM\..\Run: [AcronisTimounterMonitor] C:\Program Files\Seagate\DiscWizard\TimounterMonitor.exe
O4 - HKLM\..\Run: [Seagate Scheduler2 Service] "C:\Program Files\Common Files\Seagate\Schedule2\schedhlp.exe"
O8 - Extra context menu item: Búsqueda de AltaVista - file://C:\Users\JOSE ROMERO\AppData\LocalLow\ALTAVISTA\SelectedContextSearch_Búsqueda de AltaVista.htm
O8 - Extra context menu item: Traducir - file://C:\Users\JOSE ROMERO\AppData\LocalLow\ALTAVISTA\SelectedContextTranslation.htm
O9 - Extra button: Referencia - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O23 - Service: Lavasoft Ad-Aware Service (aawservice) - Lavasoft - C:\Program Files\Lavasoft\Ad-Aware\aawservice.exe
O23 - Service: ArcSoft Connect Daemon (ACDaemon) - ArcSoft Inc. - C:\Program Files\Common Files\ArcSoft\Connection Service\Bin\ACService.exe
O23 - Service: ePerformance Service (AcerMemUsageCheckService) - Unknown owner - C:\Acer\Empowering Technology\ePerformance\MemCheck.exe
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: DvpApi (dvpapi) - Authentium, Inc. - C:\Program Files\Common Files\Authentium\AntiVirus\dvpapi.vista.exe
O23 - Service: eRecovery Service (eRecoveryService) - Acer Inc. - C:\Acer\Empowering Technology\eRecovery\eRecoveryService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: CA Pest Patrol Realtime Protection Service (ITMRTSVC) - CA, Inc. - C:\Program Files\CA\PPRT\bin\ITMRTSVC.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: NIHardwareService - Native Instruments GmbH - C:\Program Files\Common Files\Native Instruments\Hardware\NIHardwareService.exe
O23 - Service: AT&T Internet Security Suite Service (RPSUpdaterR) - Radialpoint Inc. - C:\Program Files\AT&T\AT&T Internet Security Suite\rpsupdaterR.exe
O23 - Service: AT&T Internet Security Suite AT&T Firewall (RP_FWS) - AT&T - C:\Program Files\AT&T\AT&T Internet Security Suite\Fws.exe
O23 - Service: Seagate Scheduler2 Service (SgtSch2Svc) - Seagate - C:\Program Files\Common Files\Seagate\Schedule2\schedul2.exe
O23 - Service: StarWind AE Service (StarWindServiceAE) - Rocket Division Software - C:\Program Files\Alcohol Soft\Alcohol 120\StarWind\StarWindServiceAE.exe

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