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HP ENVY 5530

My printer had been running fine and was connected to my wireless network.  It then disconnected and I cannot get it to reconnect.  I have ensured that I have the correct password. It prints out an error message that MAC address filtering may be enabled on my wireless router and that I need to add the MAC address to my printer to the list of permitted devices for my wireless router, however when I called Mediacom (my internet and router provider) they state that they do not have MAC address filtering enabled on my router.  I have reset the printer to factory settings, reinstalled the driver from the hp website including reinstalling the initial set up cd and it still will not connect to my wireless network. Any ideas???

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