If your Brother printer not connecting to pc then here are the possible reasons for this issue:-
1. There is a Hardware problem with your Brother printer.
2. Your Brother printer driver has become obsolete.
3. The USB connectivity of your Brother printer is poor.
4. You have made unwanted changes in the Brother printer settings.
Read More:- https://www.printeralign.com/fix-my-brother-printer-not-connecting-to-my-computer