This issue can be caused due to lost connection, problems in the printer software, faulty USBs, and more. Another reason for your question about why is my HP printer not connecting to my computer is due to poor connection, issues in the network, unstable internet, etc. Additionally, you must ensure that your printer has the most recent and updated driver loaded for it to work properly. If your HP printer doesn't connect to the network on a laptop, try turning it off, waiting a few minutes, and then starting to restart it.