Dell 3100cn lost its network connectivity. It is no longer visible on the network, from my Dell Inspirion or my wife's iMac. Connecting to it with a USB from my Inspiron, it works just fine

Patricia bardsley,
You can click the link below to view information on connecting your laptop to your television.
http://bit.ly/1GPItOZ
Thank You
Dell-Jesse L
Dell Social Media and Communities

it seems your harddisk connection is not tight enough, you'll have to open your notebook up to check it.

To be able to set up wireless printer configuration, there are three basic items that you need to have. They are a high-speed broadband Internet connection (with modem), a high speed wireless router and wireless network adaptors. These three items will be used in setting up the wireless printer. Assuming that there is already an existing network in the home or office space, then all that is needed to do to make the printer available in the network through the operating system's networking wizard. If not, then the network must first be established, only then the printer will be made available through that network.

009-340 Error on the Dell Color Laser Printer 3000cn/3010cn/3100cn ...imaging drum cartridge. Turn the printer off using the power switch on the left side. Wait 10 seconds, turn the printer back on, and check if the error message...sensor solenoid nip. Turn the printer off using the power switch on the left... (English) 016-720 PCL Error on the Dell Color Laser Printer 3000cn/3010cn/3100cn ... Press Select ( ) to clear the error on the printer. Reset the printer NVRAM: Press Menu. Press the...and then press Select ( ). When Restart Printer appears, turn the printer off and then back on... (English)
KB Article How Do I Configure and Troubleshoot My Dell Color Laser Network Printer? - KB Article - 296059 ...Troubleshooting Guide for My Dell 3000cn-series / 3100cn Laser Printer ...available online for your Dell 3000cn/3100cn laser printer. The troubleshooting...printing, refer to the Dell Laser Printer 3000cn/3100cn Troubleshooting Guide... (English)

Make sure you have the ethernet cable plugged into the printer/network and is working properly. The toner replacement doesn't affect the network functions of the printer

Drum, fuser and power supply can contribute to this issue. check if you have the printer connected to a surge protector or a UPS. Laser printers are picky about surge protectors especially if they are not designed to handle the voltage.

try connecting directly to the wall the issue should get progressively better.

if you can rub the images off the paper then it's the fuser.

I lost my installation cd as well and I just figured out the solution to this problem. If you're trying to install the printer when it's attached to the network, this is how I did it. When you download the printer drivers from the Dell website, there isn't a setup.exe or similar file that will guide you through the installation setup. You still need this download, but what I did was go to the printer/faxes folder and clicked on "Add a printer". Select "Local printer attached to this computer and de-select "automatically detect and install...". On the next screen, select "create a new port" and select "standard TCP/IP port" from the drop down menu. At that point, another window will open for a wizard to add a tcp/ip port. Make sure you know the network address your printer is at and type it in. The next screen will probably say that it cannot find the device. Just select "custom" and finish configuring the port. Depending on your OS, there might not be any Dell printers. Click on Windows Update and it should update the manufacturer list. It will appear to freeze, but it's just updating the list. Click on Dell Inc. Select 3010cn. (I tried the 3100cn PCL6 and PS, but neither worked.) Make sure not to print a test page since this is not the driver for the printer and will print a million pages of junk. Click finish. Next, right click the printer you just added and select properties. Click on Advanced and click new driver. Click on "have disk", then browse. Look for the downloaded driver folder and open the PCL folder in the win_x32 folder. Select the dlxbrzi.inf file, then click on finish. Now you should be able to use the printer on your network. I don't know if there is a better way, but this is how I did it. I hope this helps.

The best way is to insert the Dell factory Disk into the server and follow the prompts it gives you to set it up on a server as a remote printer.

OP provides the solution! (BTW, I'm able to print to this printer from MacOS too.)