Hi, I have this 08 MBA and when it powers ON now all I get is this White screen. The apple logo never shows up and there is no flashing folder with a question ? mark. I can hear the chime, if I wait about 15secs or so I can press the volume buttons up/down and I can hear the sound go up/down. I can adjust the brightness of the screen up/down and see it getting brighter/darker. I can also press the CAPS lock button to turn ON/OFF the green light. What might be the issue and what can I do to fix this issue myself?