A caller has suggestions for improving wireless speed on an iPad by changing WiFi "channels" on his wireless router.  A Windows 10 Professional administrator has difficulty creating a new user on  the computer.  A Mac user attempting to listen to a streaming radio station has problems with a "hijacked" Safari web browser displaying a fake virus warning.  We offer help on clearing cache in the Safari web browser as well as setting up OpenDNS.  A user with an HP laptop that fails to display anything.  A user sees a "fake" pop-up message when using Internet Explorer.  A user configuring  the OpenDNS service to browse the Internet safely wonders if OpenDNS works with all of the computers in his household.  A Windows 7 user wonders about a configuration for a new desktop computer.  A long-time Microsoft Excel user wonders why his computer is running so slowly.