If there is no Folder Options / Search Option in no doubt there is some malware in your system. Just download some malware remover like ‘mbam.exe’ and run it.
One thing to note is that it's quite possible that if you're in an environment managed by a centralized policy, these settings may have no effect. Your IT administrator may set things up so as to disable Task Manager, and other things as well at the domain level. You'll need to ask them if this is the case.
