Trying google mobile android on my pc In order to try google mobile android on my pc (See this Website) I downloaded the file liveandroidv0.3.iso and used the 'Universal Netboot Installer' software to write the image on USB device. After restarting all works correctly until I get the image 'Live android' but the OS doesn't launch and nothing happens! This can be due of what? 

Best,
I recommend using the Android emulator if you want to experiment with Android without buying a device.  LiveAndroid isn't supported by Google and it hasn't been updated in quite a while.  It could be that your video card is not supported.

I'd also recommend using VMWare Player instead of VirtualBox if you really want to use LiveAndroid.