Therefore, should you use other printers on this Mac, once the Reset is complete simply ensure that the printers are connected via a USB Cable or Network connected and (+) Add them back in. However, it does not uninstall the printers. When the website opens follow the steps under 'Resetting the printing system in OS X Lion.' This Reset will remove every printer from your Mac. Please click here for instructions on how to perform the Reset. To start, I am going to have you Reset the Print System on your Mac as it is important that we have a nice clean slate to work with for troubleshooting. Therefore, I will be running you through some standard Mac troubleshooting steps to configure and install your printer.

Because the blue Wireless LED light is blinking on your printer this proves that you printer is searching for a network but has not successfully connected to a network at this time. A USB Cable is required for the initial wireless setup. I would like to assist you today with configuring and installing your printer. I understand that you're experiencing connectivity issues when trying to configure the connection on your HP Deskjet 2540 All-in-One Printer to communicate wirelessly with your Mac OS X 10.10 computer.