Hello Edward Hild,
It is very possible this is a compatibility issue with this specific device. I am afraid to tell there is not much that can be done in these cases. Here are our recommendations:
- Test a different device on the USB ports to ensure they are working fine.
- Remove/ re-install the device drivers from device manager.
- Make sure you have the latest drivers for the device.
Thanks for taking the time to reply, but the drivers can't be the issue: the problem occurs during POST before even the boot loader runs. If the BIOS setup were running, I might believe it checked for a HID device and got confused, since it isn't really a mouse and certainly isn't a keyboard, but BIOS setup isn't running either. I have a USB keyboard and mouse attached and they have no problem.
Does the POST code check current draw from USB ports? I want to check load current on the Space Navigator, but I need to hack a bit of hardware and haven't got around to it. If the Space Navigator draws too much current at startup, it might violate the USB spec. Could be a bad unit or marginal design. If the BIOS isn't reading current properly (bad code? wrong current sense resistor?) that would account for it too.
I have a similar problem with the boot loader where the unit powers up the two splash screens appear and then the unit shuts down and the cycle is repeated. nothing plugged in except the connection to my laptop...help???