Lenovo ThinkPad T420 Hardware Maintenance Manual - Page 42
Use the arrow keys to select, will be launched automatically. - diagnostics
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5. Use the arrow keys to select ATAPI CDx (x: 0, 1, ...) and then press Enter. The diagnostic program will be launched automatically. 6. Follow the instructions on the screen to use the diagnostic program. 36 ThinkPad T420 and T420i Hardware Maintenance Manual
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5. Use the arrow keys to select
ATAPI CDx
(x: 0, 1, ...) and then press Enter. The diagnostic program
will be launched automatically.
6. Follow the instructions on the screen to use the diagnostic program.
36
ThinkPad T420 and T420i Hardware Maintenance Manual