Lenovo 6423 Installation Manual page 52

2. Turn on the computer. If it is on already, you must turn it off and back on
3. When you are prompted to select a language, press the number on your
4. When prompted to change the serial number, press Y.
5. Type the seven-character serial number of your computer and then press Enter.
6. When prompted to change the machine type/model, press Y.
7. Type the seven-character machine type/model of your computer and then press
8. Follow the instructions on the screen to complete the update.
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ThinkStation Hardware Installation and Replacement Guide
again. The update begins.
keyboard that corresponds to the language and then press Enter.
Enter.