Diagnosing and recovering from problems 8-5Step 3 Is anything displayed on the monitor? (Continued)• The colors displayed are wrong. Make sure the monitor cable iscorrectly and securely connected to the system unit.If the problem continues, refer to “Solving hardware and softwareproblems” on page 8-7 and take the action listed.• Nothing happens when you use the mouse or keyboard.a. Make sure the keyboard and mouse cables are correctly andsecurely connected to the ports on the back of the system unit.The keyboard port has this symbol next to it:The mouse port has this symbol next to it:b. Turn the system unit off, and then turn it on again.If the problem continues, refer to the “Quick problem solving chart” on page8-6“.There may be a problem with the monitor.a. Make sure your monitor cables are correctly and securelyconnected.b. Adjust the brightness and contrast controls. For more information,refer to the documentation that came with your monitor.If the problem continues, refer to the “Quick problem solving chart” on page8-6.No