Service Guide
Page 171
... Failure" on page 163. 5. Restart the computer. Connect an external monitor to correct the problem. 1. Disconnect power and all external devices including port replicators or docking stations. If the computer boots correctly, add the devices one by removing the power cable and battery and holding down the power button for specific model...
... Failure" on page 163. 5. Restart the computer. Connect an external monitor to correct the problem. 1. Disconnect power and all external devices including port replicators or docking stations. If the computer boots correctly, add the devices one by removing the power cable and battery and holding down the power button for specific model...