http://www.cleanpcsolutions.com/remove-startup-com/ Startup.com is the one of the dangerous browser hijacker that you do not need to authorize the installation. It’s bundled with downloaded freeware software, spam email attachments, peer to peer file sharing and others. Once enter, it will change your browser settings and make your default home page startup.com and redirect your all search result on unsafe websites. It has ability to slowdown your system performance and change system settings like registry settings, task manager settings and create lots of infected file on your system’s various locations and also disable antivirus program which one installed on your computer. So it is recommend you that to remove startup.com browser hijacker from your computer immediately.