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1. Make sure you entered the correct model number
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2. You may be using an older machine
The model number you provided may no longer be in our upgrades andaccessories database. Please use IBM personal computing support tofind parts for your system or the Options Continuation Program foraccessories no longer marketed by IBM.

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3. You have a custom-built machine
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Battery: These systems do not support batteries that are not genuine Lenovo-made or authorized. Systems will continue to boot, but may not charge unauthorized batteries. Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and provides no warranties for failures or damage arising out of their use.
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General System Information: Review key information that may apply to your system purchase, including details on Windows 8, Windows 7, and potential upgrades/downgrades.