this is either a driver issue or some form of hibernation. Right click on a blank area of the screen and choose properties. Click on screen saver and then on the power button. Click on hibernate button and make sure there is no tick in the box. As for the sound right click my computer and properties then hardware and then device manager. Find the sound card and right click on it properties and see if it will let you update the driver if not uninstall it and reboot. With luck it will be found and installed working.