Yep. It all started with the USB port.
My Dad asked why he could not print from the printer and so, I was asked to help troubleshoot. Everything checked out OK. On the printer's status, there was some document waiting to print and as usual, I restarted the PC since this was a very common problem with Windows 7.
And yes!
It still did not work.
After some time, I probed around and discovered this...