How to Troubleshoot an HP Photosmart C3100

Ensure that your HP Photosmart C3100 printer is properly connected to an electrical outlet if it does not power on. Press down on the power cord to ensure that it is fully plugged into the outlet. Press the power button on the printer again and it will begin to start up.
Check your Photosmart C3100's connection to your computer if the Power button on the front of the printer flashes repeatedly after you press the 'Start Scan' button. The flashing light means that the printer is unable to communicate with your computer. Remove the USB cord that connects the two devices from the port on your computer and reinsert it.
Reset your HP Photosmart C3100 printer if it does not respond to the 'Print' command. Unplug the printer's power cord and wait at least ten seconds with the power cord removed. Reinsert the power cord and power the printer back on. Print a document of your choosing to verify that the printer is functioning properly.

How to Fix a USB Printer Device That's Not Recognized

Print a test page directly to the printer to make sure the printer is working properly. On most printers holding the power button for 5-10 seconds will start the test page printing.
Disconnect the USB cable from the printer and the computer. Turn the printer off and then reseat the cable on both ends. To reseat the cable, pull the square end of the USB cable out of the back of the printer, pull the flat end of the USB cable out of the USB slot on the computer, then firmly reattach both ends of the cable.
Power the printer back on and send a test page from your computer. To send the test page click on the 'Start' button and choose 'Control Panel' from the menu. Double-click the 'Printers and Faxes' icon and right click on the printer. Choose 'Properties' from the menu and click the 'Print test page' button.
Move the USB cable to another port on your computer if the test page still fails to print. If moving the cable does not work the USB cable will need to be replaced.

How to Mirror Print on My Canon Pixma (7 Steps)

Turn on your Pixma printer and your computer, then verify that the two devices are connected with a USB or printer cable.
Click the 'Start' button in the lower left corner of the screen, then select 'Control Panel.'
Double-click on 'Printers,' 'Devices and Printers' or 'Printers and Faxes.'
Right-click on your Pixma printer and choose the 'Printing Preferences' option.
Select the 'Main' tab at the top of the window.
Click the drop-down menu next to 'Media Type' and choose the 'T-Shirt Transfers' option.
Click the 'Apply' button at the bottom of the window, then the 'OK' button. To stop printing mirror images, return to this setting and choose a different media type.

How to Transfer Print Jobs to Another Printer

Click the 'Start' button on the left side of the task bar. Click 'Printers and Faxes' in the menu that appears, launching a new window.
Double-click the icon for the printer that you want to transfer a print job from. Look for the 'Printer' menu, then click the 'Properties' button.
Click the tab labeled 'Ports.' If the printer you wish to send the print job to is on the same print server as the other printer, click the port assigned to the printer you wish to send the print job to. Click the 'Ok' button to save your selection.
Click 'Add Port' if you want to transfer a print job to a printer on a different print server. Click 'Local Port' then click 'New Port.' Type in the blank box two forward slashes, the name of the print server for the printer you wish to send the print job to, one forward slash and the name of the printer you wish to send the print job.

How to Telnet Into an HP Printer

Launch Command Prompt on your computer by typing 'cmd' in Windows Search. If you haven't used Telnet before on a Windows 8 computer, you must install it first. To do this, open the terminal window with an admin account and type 'pkgmgr /iu:'TelnetClient' at the command prompt. Press 'Enter' and then confirm your decision as prompted.
In the text box, enter 'telnet <IP address>'. Replace the '<IP address>' with the IP of the HP printer.
Enter a user name and password for the telnet session. If this is a new setup, it is blank. You can set a user name and password to protect the machine from unauthorized telnet access. Enter 'passwd: <password>' to set a password on the telnet session after you've logged in for the first time.
Set the printer to log print jobs and errors. You can set the HP printer to store any messages to a text file on a local network computer. To set these configurations, enter the following commands:syslog-config: 1
syslog-svr: <local computer's IP address>
set-cmnty-name: <printer's SNMP password>The SNMP, or Simple Network Management Protocol, password is a separate password from the main telnet session. Replace '<local computer's IP address>' with the IP for the computer that stores the system logs.
Type 'IP <new_ip_address>' to change the IP for the HP printer. Once you change the IP address, you need to take note of the change to telnet to the printer a second time.
Close the telnet window and send a test print. This ensures that you've configured the settings properly and the IP address is found by the local network machines.

How to Manually Clean an HP Inkjet Cartridge

Unplug the power cord from the printer.
Remove the ink cartridge(s). Check your user manual for specific instructions on how to remove your cartridge from the printer. Once you've removed them, place them wide side down on a paper towel.
Find the copper colored circuitry strip. This is generally located on the back of the cartridge. Clean this portion with a cotton swab containing a little bit of water.
Find the carriage contacts on the ink cartridge. These are located on the back wall of the ink cartridge. Clean these contacts with a cotton swab containing a little bit of water also.
Remove any leftover moisture. Examine both the copper colored circuitry strip and the contacts you've just cleaned. Use a cotton swab to remove any water left on each.
Reinstall your ink cartridge(s). Consult your manual for full directions on how to do that. Be sure all moisture is removed from the ink cartridge before reinstalling.

How to Change a Printer from Offline to Online

Open the Start menu and click on the 'Devices and Printers' icon. This will open a window with a list of the printers currently set up on your computer.
Double-click on the icon of the printer you want to change to online. The status of the printer will be shown as either 'Printer: Ready' or 'Printer: Offline.'
Click on 'Printer: Offline' and the Printer menu will appear. Click on 'Printer' in the menu bar and uncheck 'Use Printer Offline.' This action will change the printer from offline to online.



Open System Preferences by clicking on the icon in the Dock.
Go to the Print & Fax control panel under the Hardware category.
Select the printer you want to take online from the list on the left side of the screen. Then click on the 'Open Print Queue' button.
Click on the 'Resume Printer' button at the top of the queue window to change the printer from offline to online.