I am having a problem with my usb,

The USB works fine, but sometimes it goes on and off and than on again.
Is this a some kind of power problem.
Anyone one have an idea?

Welcome to the http://www.pcguide.com/ubb/pcgubb.gif forums.

Sorry it took us so long to respond.

You need to post the full model and make of the laptop, the OS and how you have the power settings in the bios. Also what device are you using on the USB port and are the drivers set up correctly for it.

We will need a lot more information to help you.