You need to get into the BIOS and change the setting for the Waking up action specified there, there ought to be 4 or 5 options which tell you whether to wake the system from a LAN signal, a Keyboard Signal, A mouse Gesture, a power switch flip or a modem signal.... etc etc.
Make sure the Sleep state is S3 and set the Wake Up even as Enabled for the Keyboard & Mouse.
i want to use it for netflix and windows media player. I have a wireless mouse and keyboard i want to use to wake it. on a side note if i let my computer sleep without using the sleep button it just on the timer, then keyboard and mouse will work to wake it. but when i click to make the computer sleep, it wont work to wake it with keyboard and mouse