You can either post the picture or better to attach the part here.
Someone can have look at your issue
Check if the location of hole call out file under Tools > Options > File Location is correct or not. Also check if the hole call out format file format is correct or not by opening it and checking it. The default file location is C:\Program Files\SolidWorks Corp\SolidWorks\lang\english
For some reason I had two C:\Program Files\SolidWorks Corp\SolidWorks folders and the first one was empty and being linked in the file manager and the second one had all the files. Copying and pasting all files fixed the issue.