All branded PCs comes with Serial numbers and Model numbers, after long time of usage you have noticed your tag on the device is missing or tampered. when you contact company service centre, they will ask you the model number and other details of your machine. here is the commands to view the useful hardware information from Windows command prompt.
1. Model number or name
wmic csproduct get name
2. Serial number
wmic csproduct get serialnumber or wmic csproduct get IdentifyingNumber
3. BIOS information
wmic bios get name,serialnumber,version