The following steps can be performed in sequential order or one component at a time noting to be very careful when removing and replacing components to assure the connections are clean, not damaged and connected properly.
The easiest connections to verify are the Hard Drive, UltraBay Slim Device connections and the Memory Module under the memory cover on the bottom side of the laptop.
You can also try this method and see if that is effective
- Unplug the AC adapter.
- Take out the battery.
- Press the power button 10 times in a row at one second intervals.
- Press and hold the power button for 30 seconds.
- Replace the battery back and push the power button.
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