Troubleshooting - Lenovo Laptop User Manual

Lenovo Portable Computer User Guide
4.1.6 Do not change the factory hardware without
authorization
Do not change the computer's factory hardware, including
removing original hardware or adding new hardware, without
authorization from Lenovo licensed agencies.
Lenovo has no warranty on the usability or reliability of any devices
or software that are not provided by Lenovo or its affiliates.

4.2 Troubleshooting

4.2.1 The computer does nothing when you turn it on.
Do as follows:
See if the AC adapter and its power cord are well connected to
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the computer and power outlet.
Check the battery's power status (some battery has a power
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self-checking button). See if the battery interface is defiled or if
the power cord plug is defiled.
Use the battery and AC power to power the computer
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respectively. Turn the computer on to see if the power indicator
is on.
If you the above-mentioned methods do not work, contact
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Lenovo licensed service agencies.
4.2.2 You can turn on the computer but can not start the
system.
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