First, because it can be considered malware, first see if you can uninstall it in Control Panel-Programs and Features.. Next, download, install, update and run full system scans with BOTH of the free tools below. Delete any spyware/adware they find. The scans will take a while but it should clean out the junk.
Malwarebytes Installer Download Link (Clicking on the links below may immediately start the download dialogue window.)
Once that's done, then open your browsers, and access the "Add-ons" section and remove the search engines you're referring to, if they're not already removed.
Hope this helps.
I trusted this site and ended up with two search engines that have taken over my computer including administrator so I can't get rid of them
I ended up with Tuvaro and proxy.allsearch all from one download here.
I can't get them off my computer. They are embedded and hidden and they took my administration control away from me.
HOW DO I GET RID OF THEM! SHAME ON YOU CNET FOR ALLOWING THIS! NEVER AGAIN WILL I EVER COME HERE FOR DOWNLOADS! YOUR PAGES ARE FULL OF DOWNLOADS OF CRAP NOW!