Windows System Info
Get PC's serial number
wmic bios get serialnumber
wmic csproduct get vendor,name,identifyingnumber
Get Windows build number from an .iso file
dism /get-wiminfo /wimfile:g:\sources\install.wim
Then, run it again with whichever index number you want to display:
dism /get-wiminfo /wimfile:g:\sources\install.wim /index:3