Hi Juanita, when dealing with tuvaro.com browser hijacker you should look and uninstall "Search module" or "Tuvaro toolbar" from your Control Panel. You should also check for any recently installed (suspicious) programs and uninstall them. After this procedure double check your Internet browsers extensions and eliminate Tuvaro related add-ons. Then scan your computer with Malwarebytes Antimalware or Spyhunter. Bother of these programs are capable of detecting and eliminating Tuvaro browser hijacker. https://www.pcrisk.com/top-spyware-removers

Another thing you could check is your Internet browsers shortcut targets - some of the browser hijackers are known to alter them. To fix this - locate your Internet Explorer (or Mozilla Firefox) shortcut on your Desktop and click the right mouse button over it. In the opened menu choose "Properties". In the opened window locate Target field and eliminate any text which is entered after "C:\Program Files\Internet Explorer\iexplore.exe" (the same should be repeated with Mozilla Firefox).