Trend Micro Inc - (Free)
HijackThis is a useful tool that removes the unwanted components or settings of the programs.
HijackThis is a specific tool to detect and remove spyware and hijackers stealthily installed on your computer . HijackThis is a tool known for its effectiveness in this area, however thi software require some tech skills. The basic interface, but very light goes straight to the point, scan your computer and shows a list of detected objects.
From this list there can be selected the programs considered to be malicious or consuming resources or having unwanted settings and be removed or modified. By removing the unwanted components the startup speed of the computer will increase.This software is useful when used by a competent person else important files or settings can be deleted which could lead to a crash of thesystem.