HP Officejet t45 All-in-One series
IMPORTANT: Start with Step A, and complete the steps in order.
STEP A: UNINSTALL prior Officejet software and POWER OFF your Officejet.
Click Start, click All Programs, point to HP Officejet, and then click Uninstall Software.
POWER OFF your Officejet and leave it powered off until the installation program prompts you to power it on.
Restart your computer.
STEP B: Confirm that ECP (Extended Capabilities Port) Mode is enabled.
Your computer's parallel port must be set to ECP mode, which allows greater communications capabilities through the parallel port. Perform the following steps to confirm that ECP mode is enabled:
Click Start and then click My Computer.
Under Tasks, click View System Inform