fixa questa voce:
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
Queste le conosci?
C:\Programmi\File comuni\Common Desktop Agent\CDASrv.
C:\Documents and Settings\enzo\Impostazioni locali\Dati applicazioni\Mikogo4\Viewer\Service\M4-Service.exe
C:\Programmi\PaperCut Print Logger\pcpl.exe
C:\Programmi\PDF Architect\HelperService.exe
C:\Programmi\PDF Architect\ConversionService.exe
C:\Programmi\RealNetworks\RealDownloader\rndlresol versvc.exe
P:\Programmi\TecnoManager2.11\upsMonitor.exe
C:\Documents and Settings\enzo\Impostazioni locali\Dati applicazioni\Mikogo4\Viewer\Service\M4-Capture.exe
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Int ernet Settings,ProxyServer = proxymed.citicord.uniroma1.it:8080
O4 - HKLM\..\Run: [CDAServer] C:\Programmi\File comuni\Common Desktop Agent\CDASrv.exe
O16 - DPF: {73ECB3AA-4717-450C-A2AB-D00DAD9EE203} - http://h20614.www2.hp.com/ediags/gmd...pdetect118.cab
O23 - Service: M4-Service - Unknown owner - C:\Documents and Settings\enzo\Impostazioni locali\Dati applicazioni\Mikogo4\Viewer\Service\M4-Service.exe
O23 - Service: PaperCut Print Logger (PCPrintLogger) - PaperCut Software International Pty Ltd - C:\Programmi\PaperCut Print Logger\pcpl.exe
O23 - Service: PDF Architect Helper Service - pdfforge GmbH - C:\Programmi\PDF Architect\HelperService.exe
O23 - Service: PDF Architect Service - pdfforge GmbH - C:\Programmi\PDF Architect\ConversionService.exe
O23 - Service: RealNetworks Downloader Resolver Service - Unknown owner - C:\Programmi\RealNetworks\RealDownloader\rndlresol versvc.exe
O23 - Service: upsMonitor - Acresso - P:\Programmi\TecnoManager2.11\upsMonitor.exe

Postami il ComboFix-quarantined-files.txt
P.S. se fai di testa tua è inutile che chiedi nel forum !!