Printer ProblemsFill out the Diagnostics Checklist as you complete these checks.Serial or Parallel Device ProblemsFill out the Diagnostics Checklist as you complete these checks.The computer is receiving electrical power, but an internal power problem might exist.l Ensure that the processor power cable is securely connected to the system board.l See Diagnostic Lights.Eliminate interference — Some possible causes of interference are:l Power, keyboard, and mouse extension cablesl Too many devices on a power stripl Multiple power strips connected to the same electrical outletCAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.NOTE: If you need technical assistance for your printer, contact the printer's manufacturer.Check the printer documentation — See the printer documentation for setup and troubleshooting information.Ensure that the printer is turned onCheck the printer cable connections —l See the printer documentation for cable connection information.l Ensure that the printer cables are securely connected to the printer and the computer.Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.Verify that the printer is recognized by Windows —1. Click the Start button, click Control Panel, and then click Printers and Other Hardware.2. Click View installed printers or fax printers.If the printer is listed, right-click the printer icon.3. Click Properties and click the Ports tab. For a parallel printer, ensure that the Print to the following port(s): setting is LPT1 (PrinterPort). For a USB printer, ensure that the Print to the following port(s): setting is USB.Reinstall the printer driver — See the printer documentation for instructionsCAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.NOTE: If you are having a problem with a printer, see Printer Problems.Check the option setting — See the device's documentation for the recommended settings. Then enter system setup (see System Setup)and go to the Integrated Devices option settings. Ensure that the Serial Port setting or the Parallel Port setting matches therecommended settings.Check the Diagnostic Lights — See Dell Diagnostics.