Okay so I got myself an Acer laptop which uses hotkeys. Most of my hotkeys work, and all of them worked at first, but now my volume hotkey has stopped working .. Usually, if I pressed fn and the up or down keys, the volume would go up or down, but now it doesn't work .. Also, when I would press Caps Lock, an icon would appear on the screen to tell me wether it was on or off .. Now, nothing ! Help me please.