Run System Information as administrator.
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Press the Windows key or click Start.

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Search for "System Information".

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Right-click then select "Run as administrator".

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Check "Device Encryption Support" under "System Summary".

System Information item values
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When "Dedicated GPU only" is selected in BIOS:
"Reasons for failed automatic device encryption: PCR7 binding is not supported, Un-allowed DMA capable bus/device(s) detected, Disabled by policy"

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When Nvidia Optimus or Dynamic Switching is selected:
"Meets prerequisites"

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