... is because I don't have a work computer, some time ago, some weeks, my computer's usb ports didn't seem to work right.
I had a friend look it over and he came to the conclusion it's either the power supply not giving enough power or the motherboard.
I bought a new power supply and my friend will come over and look the computer over again, if it doesn't work, then it's the mother board and will have to start looking for a new machine.