GameSearchTech is a browser hijacker that will attempt to commandeer your browser search and homepage. This browser hijacker will display unwanted advertisements, pop-ups ads, sale coupons and banners. Clicking any of these will send you to malicious websites to get money from you or infect your computer further. It may also prevent you from changing your settings back.
GameSearchTech is usually installed through bundled software without you knowing. Remove it immediately.