Startpage24 is a browser 3-rd party extension developed by Link64Gmbh . This might be installed due to '''express installation ''' of some of software,which cause to changes the startup page. To remove this from your browser do like this : Press '''A''' simultaneously while holding '''CTRL and SHIFT''' key(CTRL+SHIFT+A)from keyboard(You will be reached on Addons section). Now from plug-in(if not then search on extension) tab search it and remove it from there. This will helps you to remove it completely from your browser. If you didn't found here this one then goto '''Control Panel''' in your computer > '''Programs ''' > '''Uninstall a program''' . from here uninstall it (look for any toolbar ) and follow next steps suggested by the uninstaller. Again goto browser and open menu (right top side) > option > Startup >Hompage . Change it to other sites or use empty tab . That's it.