Power surge problem on laptop with Windows Pro SP3

Hello, everyone!
I have a computer problem that scares me a bit. I get this error message that says, "Power surge on hub port and it won’t go away. A USB device has exceeded the power limits of its hub port. For assistance in solving this problem, click this message." This pops up even when there is no USB device connected.
I have just installed Windows Pro Service Pack 3 on my laptop, which also contains a wireless card. Unfortunately, I don’t have any inkling how to access this card.
Any suggestion on how to solve this would be greatly appreciated. Thanks!
