It's strange, the LED should be turned on after no more than 5 minutes AFAIK (take into account the Intel Galileo may take several minutes to boot).
The picture shows there is a SD card plugged in. Please:
a) Remove the SD card from the Intel Galileo
b) Turn on your Intel Galileo and wait 7 minutes (I don't know the exact amount of time, I just guess 7 minutes is good enough)
c) Post the device manager screenshot before you plug in the Intel Galileo USB to your computer
d) Post the device manager screenshot after you plug in the Intel Galileo USB to your computer
If the led is not turned on and the device manager does not show anything, then I think there is a hardware failure.
i wait 7 minutes, but it doesn't work again, i try this plug in USB to my Linux and nothing changed.
USB Led doesn't lights up.
What can i do for that?
Take a look at Re: Intel Galileo Gen 2 dead after booting from SD ?, and submit a warranty ticket...