hello, i have been using windows 7 for almost 3 years now, and i had a xbox controller and razer keyboard in the usb slots, and the keyboard isn't working when i take you the xbox controller or vice versa. the keyboard works when i am in windows system repair, but not on the password screen. please help 

My Computer
- Computer type
- Tablet
- Computer Manufacturer/Model Number
- asus
- OS
- Windows 7 Home Premium 64bit