If you are always being redirected to Policester.info while using your browser, then your computer is infected with a virus.
Policester.info is an adware that will attempt to commandeer your browser search and homepage. The adware will barrage you with pop-up ads or unnecessary notifications. These pop-ups eat up significant chunk of your PC resources slowing down your system. It will also send you to malicious websites to get money from you or infect your computer further, collect your personal data and browsing history. Furthermore, it may also prevent you from changing your settings back.
The adware Policester.info is usually installed through bundled software without you knowing. You have to remove it immediately.