My wife's computers has a wireless USB receiver and transmitter connected and every time she boots up the device is not on. The transmitter plugs into a device that in turn is connnected to the computer via USB. When the computer finished booting up if you unplug the transmitter and then replug it in the computer says it recognizes the device and in a few minutes everything works fine.

This started several months ago. I'm not sure what could have caused it or how I can it back to starting automatically. Any Ideas?

Best idea would be to replace the USB device with a PCI wireless card instead.

First you need to figure out if it is a linkys and if another program is used to connect to the wireless network.