Lenovo ThinkCentre A50p (English, Danish, Norwegian, Finnish, Swedish) Quick r - Page 41

Chapter 4. Troubleshooting and diagnostics This chapter describes some basic troubleshooting and diagnostic tools. If your computer problem is not described here, use Access IBM for more detailed troubleshooting information. Basic troubleshooting Symptom Action The computer does not Verify that: start when you press the v The power cord is plugged into the rear of the computer power button. and into a working electrical outlet. v If your computer has a secondary power switch on the back of the computer, ensure that it is switched on. Check the power indicator on the front of the computer to ensure that the power is on. The monitor screen is blank. If you cannot correct the problem, have the computer serviced. Verify that: v The monitor cable is securely attached to the rear of the monitor and to the rear of the computer. v The monitor power cord is plugged into the monitor and into a working electrical outlet. v The monitor is turned on, and the brightness and contrast controls are set correctly. v The monitor signal cable is securely connected to the monitor and to the monitor connector on the computer. Note: If your computer has two monitor connectors, verify that your monitor is connected to the one in the accelerated graphics port (AGP) option slot rather than the one in the rear of the system board. See Step 4 on page 4. If you cannot correct the problem, have the computer serviced. © Copyright IBM Corp. 2003 15