If you are trying to transfer data from your old laptop to a new laptop using OneDrive and do not see the option to enter the old computer name, it may be because OneDrive does not require you to specify the old computer name for the transfer. Instead, you can manually copy your files to OneDrive from your old laptop and then access them on your new laptop by signing into the same OneDrive account.
If you are looking for a more automated way to transfer settings and files, you might consider using Windows Backup or other methods that do not rely on OneDrive. For example, you can manually copy files using an external drive or explore using tools like the User State Migration Tool (USMT) if you are in a more enterprise environment.
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