QUOTE(reliantkcar @ May 26 2008, 08:51 PM)

lol I just bought one and got the same thing right after the guy left.
check the power brick is the lights red or green or yellow.
try disconnecting the wires then try it again.
if it still doesn't power on look into that xclamp thing. but you'll need to be more detailed into what it does.to figure out whats wrong........
Sounds to me like 0001
To determine whats the problem you will have to tell us your secondary error code...
--==SECONDARY ERROR CODES==-
The specific type of hardware failure can be determined by a "hidden" error code
* Turn the xbox 360 on, and wait till the 3 red lights are flashing.
* Press and hold the sync up button (the small white one), while holding that button press the eject button.
* The LEDs will now blink the first number in the code (as described below).
* Release the eject button and press it again.
* The LEDs will now blink the second number of the code.
* Release the eject button and press it again.
* The LEDs will now blink the third number of the code.
* Release the eject button and press it again.
* The LEDs will now blink the forth number of the code.
* Release the eject button and press it again.
* The LEDs will go back to the 3 red flashing lights.
You should be able to determine the difference between the 3 flashing lights and the error code lights by the rate in which they flash.
Here is how you interpret the LEDs to get the code number:
* All four lights flashing - 0
* One light flashing - 1
* Two Lights flashing - 2
* Three lights flashing - 3