When i start my laptop for class there's always this red 'x' on the internet logo and it says no connections available even though my mobile is connected to the internet. This has been a recent problem. Other times I would easily rectify it by pressing the ariplane button. As soon as i pressed, two logos, one of wifi and the other - bluetooth would appear on the screen so i could just switch them on and off but now nothing appears on the screen. Not only that, when i press the sound button to increase/decrease the volume, a scale of 1 to 10 used to appear but now nothing happens. Is this a serious problem? I feel like everything would be normal if the sound and airplane mode graphics appear on the screen