I once sent an HF radio in for repair when I had accidentally turned the squelch and there was no audio. Do them the courtesy of posting the solution.
People have put effort into helping you solve your problem.
Make sure you indicate whether you are using a usb to serial adapter.
The N1MM Logger discussions on Yahoo have been abandoned. More About the groups.io Discussion Forum Only if your Forum questions are unanswered, or if directed to do so by a member of the N1MM Dev Team, escalate your issue by logging a Bug Report on the >Support >N1MM Trouble Ticket system. If you have questions about N1MM+ or encounter “bugs” during its use, please post to the N1MM+ Forum for getting your questions answered. The N1MM Development Team expects that Hams who choose N1MM+ as their contesting software will be prepared to “Pay It Forward” by participating in the User Forum and assisting other Hams on the reflector.
Archive Files (1/2021) – N1MM on WindowsXP.