Dell Command | Monitor Version 10.8 User's Guide

Setting BIOS attributes in a system running Windows using PowerShell commands

You can set BIOS attributes using the SetBIOSAttributes method. The procedure is explained below using a task of enabling the Trusted Platform Module (TPM) as an example.

1. Set the BIOS password on the system if not set already using the following PowerShell command:
   Get-CimInstance -Namespace root\dcim\sysman -ClassName DCIM_BIOSService | Invoke-CimMethod -MethodName SetBIOSAttributes -Arguments @{AttributeName=@("AdminPwd");AttributeValue=@("<Admin password>")}
2. Enable TPM security using the following command:
   Get-CimInstance -Namespace root\dcim\sysman -ClassName DCIM_BIOSService | Invoke-CimMethod -MethodName SetBIOSAttributes -Arguments @{AttributeName=@("Trusted Platform Module ");AttributeValue=@("1");AuthorizationToken="<Admin password>"}
3. Restart the system.
4. Activate the TPM using the following command:
   Get-CimInstance -Namespace root\dcim\sysman -ClassName DCIM_BIOSService | Invoke-CimMethod -MethodName SetBIOSAttributes -Arguments @{AttributeName=@(" Trusted Platform Module Activation");AttributeValue=@("2");AuthorizationToken="<Admin password>"}
5. Restart the system.
   Generic disclaimer

   Powershell PSReadline module saves every console command that you enter to a text file. So it is recommended to use "Get-Credential" comandlet to handle the password securely.

   1. $cred = Get-Credential

   2. Enter your username and password, for example, AdminPWD and Dell_123$, when the dialog box is displayed.

   3. $BSTR = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($cred.Password)

   4. $plainpwd=[System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)

   5. Get-CimInstance -Namespace root\dcim\sysman -ClassName DCIM_BIOSService | Invoke-CimMethod MethodName SetBIOSAttributes -Arguments @{AttributeName=@("AdminPwd");AttributeValue=@(" $plainpwd ")}