Lenovo ThinkPad 770 TP 770X User's Reference that shipped with the system - Page 179
Start, Enter, below it, make a note of the error code and have
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Testing Your Computer 3 Select the Test icon; then select the Start icon or press Enter. Do not touch the keyboard or the pointing device during the test. A window such as the following appears. The devices shown in the window are associated with features and options of your computer. If you cannot go to the next menu, have your computer serviced. If an X appears to the left of a device with an error code below it, make a note of the error code and have the computer serviced. If you have the SelectaDock I or II docking station as an option with your computer, you need to create the diagnostic diskette to test the SelectaDock docking station. This diskette replaces the diagnostic portion of existing SelectaDock I or SelectaDock II Option Diskette. Do the following: 1. Create the SelectaDock I/II Diagnostic Diskette, using the Diskette Factory program preinstalled on the hard disk. 2. Connect your computer to the SelectaDock I or II docking station. 3. Start from the SelectaDock I/II Diagnostic Diskette. Follow the instructions on the screen. Chapter 4. Solving Computer Problems 165