If you contact the IT Service Desk for assistance, you may be asked to provide the computer name or other related information:
For Windows 11, see this FAQ
For macOS see below:
Option 1
- Open Self Service.
- Find Self Service in the dock or in your Applications folder.

- Look in All Programs for Computer Information

- Click on Show to find the computer name.
Option 2
Open the Apple menu > System Settings. Click General in the sidebar, then select About. Your device name is listed to the right of the Name field