So yesterday I still used my Oculus Rift but today I wanted to play a game and the Oculus software said that my headset wasn't connected. When I tried to connect it again, it just keeps searching for devices.
You should try switching the USB cables to different ports. Some ports can wok better than others (USB 2.0 tends to be more compatible). Also check the cable going into the headset by pulling off the facial interface and reconnecting the cable on the top left.