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windows 10 - BIOS settings have been changed to Legacy Support but PC still boots through UEFI mode - Super User
Lenovo ThinkStation P300 BIOS and Software - Lenovo ThinkStation P300 Workstation Review: Haswell plus Quadro
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How to update the Machine Type and Model (MTM), System Serial Number (SN), or System Brand ID of system BIOS menu – ThinkCentre, ThinkStation - Lenovo Support US
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How to select boot device from BIOS (Boot Menu) - ideapad, ThinkPad, ThinkStation, ThinkCentre, ideacentre - Lenovo Support ZA
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