m pen drive light keeps on lighting all the time i insert it in the usb port, it never goes off in windows 7, is it normal or there is some problem.
Does it behave differently under different OSes? My Sandisks stay lit all the time, on XP, Linux and Vista, flashing on and off when the drives are actually used. I have an old Memorex drive that only flashes on when it's being accessed.
If the USB port is operating normally with other USB devices then I doubt you have an issue with the USB port itself.
I assume your talking about a USB storage device (thumb drive). I thought the lights were designed to come on only when it's communicating with the computer (after insertion and when reading or writing).