Sigur esti virusat.Descarca arhiva zip. de aici; http://forum.softpedia.com/index.php?showtopic=70645 dezarhiveaza.si ruleaza enable registry.si incearca sa stergi virusul care iti face problema.
Apesi "start", apoi "run" si copiezi "REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_", iar daca nu merge sigur ai un virus.