EVERY semester, there are MANY complaints logged by the NNU Help Desk that pertain to students being unable to connect to WiFi in their rooms. When our technicians have scouted it out, we often find two or three HP printers broadcasting a wireless signal in a very wide band. This wide band squelches the WiFi in those areas of the dorm where the wireless printer signals are broadcast. Also, when you join the NNU network with your printer, someone who knows how can print directly to your printer. This is not an uncommon issue. If you check other university campus help sites, you'll see they have the same problems. We have checked them out and have found some useful ideas to help you.
What can be done?
When you are not actively using your HP printer, turn it off. You could also be really nice to your neighbors and just use a USB cable to hook up your laptop to your printer and skip the whole wireless printing thing. Then you can turn off the wireless broadcast that is so disruptive to WiFi.
Here's how to turn off HP wireless printing to protect WiFi connections in your dorm.
The recommendations below have been collected from HP's forums, service manuals, and other university help sites. When in doubt, call your HP service or support line.
Use the menu to navigate to Setup, then Network, then Wireless Radio (on some models, this is towards the bottom of the scrollable menu). Turn the Wireless Radio OFF. HP has a helpful how-to page that discusses this process: https://blink.ucsd.edu/technology/network/connections/wireless/improving/hp-wireless-printer.html
For HP Photosmart d110
Some models may allow you to press the blue "wireless" button on the bottom front of the printer to turn the light out and service off. You may need to hold the button for 5 seconds to turn the light out.
If this is not successful, use the menu to navigate to Settings > Wireless > Wireless settings > Disable Wireless > OK.
For HP Laserjet P1102w
Press and hold the "wireless" image button on the left-hand button panel for 5 seconds to turn off the service. The light will turn off.
For HP Photosmart c4780:
From the front panel, choose "Scan". Scroll up or down to find Networking. Select this, then turn off Wireless.
For general assistance with HP printers, please contact your HP service representative. For general wireless assistance, contact the IT Services Help Desk.