I am using an XP machine to run NCLite which uses COM1. At the moment, the only way I can use this software is to;
1. goto Device Manager and uncheck Use Automatic Settings,
2. disable the port,
3. reboot the machine,
4. re-enable the port.
After I turn off the machine, the only way to get COM1 to work with NCLite (or HyperTerminal) again is to repeat steps 2-4.
How do I make the machine allow use of COM1 by NCLite (or HyperTerminal) without having to go through Device Manager every time I boot?
Maybe there is a conflict with COM1? I have had similar problems and it sometimes helps to rename the port to COM9 or something which is less likely to be conflicted. For some reason, it seems that windows thinks some COM ports are "in use" even when they are not. You can change the COM number in device manager, advanced COM port settings.