Introduction
This guide provides instructions on how to replace the fan and heat sink assembly on the Lenovo IdeaPad Y580-2099 laptop. The fan and heat sink are a combined assembly which can not be separated from each other.
Tools
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Flip laptop back over and unscrew the disc drive screw.
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Remove the disc drive.
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Unscrew all of the screws on the back of the device.
 
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Flip the device over.
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Unplug the two wires, as shown in the images.
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Lift up on the keyboard bezel.
 
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Unscrew the screws on the motherboard.
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Disconnect the three connectors the two black and one white.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.