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Get BIOS Information From Command Line
wmic BIOS Get SerialNumber
Note: This only works if the serial number is stored in the BIOS. Most OEM's like HP, Dell, and Lenovo do this.
wmic BaseBoard Get SerialNumber
Get OS Version
wmic OS GET CAPTION,VERSION
Get a User's SID
wmic UserAccount WHERE Name="<USERNAME>" Get Name,SID
Note: Substitute <USERNAME> with the Username of the SID you want retrieve.
Get Last logged in user
wmic PATH Win32_NetworkLoginProfile GET Name,LastLogon
Refrences
http://msdn.microsoft.com/en-us/library/windows/desktop/aa394221%28v=vs.85%29.aspx
http://blogs.technet.com/b/askperf/archive/2012/02/17/useful-wmic-queries.aspx