Lenovo ThinkPad T450s User Manual page 129

Refer to "Diagnosing problems" on page 97 and run a diagnostic test of the USB connector.
A docking station problem
Problem: The computer does not start when you try to turn it on, and does not respond when you try to
resume operation.
Solution: Make sure that:
• The ac power adapter is connected to the docking station.
• The computer is securely attached to the docking station.
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Chapter 8 Troubleshooting computer problems