My old [win xp] but usually trusty upstairs desktop suddenly refused to print anything...kept claiming the usb attached laser printer was offline.
Checked the device manager, it showed a problem with the usb controller.
I tried uninstalling, then re-installing the usb drivers...that didn't help.
I tried the unplug from power sources for 30 minute trick, again, no dice.
Tried downloading new drivers, got nowhere.
ETA: 1st hint of a problem was when the USB sound device suddenly stopped working a few days ago. The printer was still working then so it didn't matter too much. But I need to be able to print from the computer.
Any suggestions besides installing a PCI USB controller card?