If the power light is blue and the computer is not responding — See Power Lights.
If the power light is blinking blue — The computer is in standby mode. Press a key on the keyboard, move the mouse, or press the power button to resume
normal operation.
If the power light is off — The computer is either turned off or is not receiving power.
l Reseat the power cable in the power connector on the back of the computer and the electrical outlet.
l Bypass power strips, power extension cables, and other power protection devices to verify that the computer turns on properly.
l Ensure that any power strips being used are plugged into an electrical outlet and are turned on.
l Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
l Ensure that the main power cable and front panel cable are securely connected to the system board (see System Board Components).
If the power light is blinking amber, beep code 3 — The computer is receiving electrical power, but a system board failure may exist.
l Ensure that the voltage selection switch is set to match the AC power at your location (if applicable).
l Ensure that all components and cables are properly installed and securely connected to the system board (see System Board Components).
If the power light is steady amber — A device may be malfunctioning or incorrectly installed.
l Ensure that the processor power cable is securely connected to the system board power connector (POWER2) (see System Board Components).
l Remove and then reinstall all memory modules (see Replacing or Adding a Memory Module).
l Remove and then reinstall any expansion cards, including graphics cards (see PCI and PCI Express Cards).
Eliminate interference — Some possible causes of interference are:
l Power, keyboard, and mouse extension cables
l Too many devices connected to the same power strip
l Multiple power strips connected to the same electrical outlet
Printer Problems
Check the printer documentation — See the printer documentation for setup and troubleshooting information.
Ensure that the printer is turned on
Check 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 —
Windows XP:
1. Click Start® Control Panel® Printers and Other Hardware® View installed printers or fax printers.
2. If the printer is listed, right-click the printer icon.
3. Click Properties® Ports. For a parallel printer, ensure that the Print to the following port(s): setting is LPT1 (Printer Port). For a USB printer, ensure
that the Print to the following port(s): setting is USB.
Windows Vista:
1. Click Start ® Control Panel® Hardware and Sound® Printer.
2. If the printer is listed, right-click the printer icon.
3. Click Properties and click Ports.
