I'm having a really weird problem. Windows can't seem to detect my modem anymore on startup. I have an external U.S. Robotics 56K Faxmodem USB which has worked perfectly for two years. Only recently, whenever I boot up my computer (AMD Athlon 2800+ with Windows XP Pro SP2), the LED on my modem fails to light up and essentially the modem is not detected by Windows (is non-functional). The problem is reproducable on every boot.
Also, (here's the wierd part) I can 'fix' the problem by simply unplugging the line that plugs my modem into a USB port in the back of my computer while the computer is on and then simply plug it back in again and the LED on my modem will now light up and the modem is fully functional but only as long as the computer remains on. As soon as I turn off the computer and then turn it back on again, the same scenario happens where the modem is not detected. This only happens on a cold reboot (full shut down, wait ten seconds, turn back on again). If I click Start >> Turn Off Computer >> Restart then the modem remains detected and fully functional.
I've tried everything I can think of to fix this problem including reinstalling the modem software, changing the COM port # for the modem, plugging it into a different USB ports (they all produce the same problem).
This is kind of an annoyance more than anything. I can get the modem to work but not after unplugging and replugging it into the USB port. I'd like to get this working back to the way it was normally, i.e., Window detects my modem on startup, the LED lights up and the modem is fully functional automatically.
Any help would be appreciated. I'm clean out of ideas.