In the Windows Device Manager, make sure that the USB drivers have not been disabled.

If you are using a computer running Windows, and the computer cannot detect the printer, run the uninstallation utility (util\ccc\uninstall.bat on the installation CD) to perform a clean uninstallation of the printer driver. Restart your computer, and reinstall the printer driver.

Verify installation preliminaries

Make sure to use the installation CD that contains the correct HP software for your operating system.

Before installing HP software, make sure that all other programs are closed.

If the computer does not recognize the path to the CD-ROM drive that you type, make sure that you are specifying the correct drive letter.

If the computer cannot recognize the installation CD in the CD-ROM drive, inspect the installation CD for damage. You can download the printer driver from the HP Web site (www.hp.com/support).

NOTE: After correcting any problems, run the installation program again.

Solve network problems

General network troubleshooting

If you are unable to install the HP software, verify that:

All cable connections to the computer and the printer are secure.

The network is operational and the network hub is turned on.

All applications, including virus protection programs, spyware protection programs, and firewalls, are closed or disabled for computers running Windows.

Make sure the printer is installed on the same subnet as the computers that will be using the printer.

If the installation program cannot discover the printer, print the network configuration page and enter the IP address manually in the installation program. For more information, see Understand the network configuration page.

If you are using a computer running Windows, make sure that the network ports created in the printer driver match the printer IP address:

Print the printer’s network configuration page.

Click Start, then click Printers or Printers and Faxes.

- Or -

Click Start, click Control Panel, and then double-click Printers.

Right-click the printer icon, click Properties, and then click the Ports tab.

Select the TCP/IP port for the printer, and then click Configure Port.

Compare the IP address listed in the dialog box and make sure it matches the IP address listed on the network configuration page. If the IP addresses are different, change the IP address in the dialog box to match the address on the network configuration page.

Click OK twice to save the settings and close the dialog boxes.

Troubleshoot installation issues

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HP 7500A E910 C9309A#B1H manual Solve network problems, Verify installation preliminaries, General network troubleshooting