Well, it seems like nobody understands me...
Actually I took out the CD-ROM drive from the casing, and unscrew it and pull up the drive casing...
and then the tray works perfectly without the casing...once i put the casing back on, the tray wouldn't come out again...
I am not sure what's wrong with the drive. and the small little whole near the eject button, i've tried, it doesn't work at all, the light blinks but the tray never comes out. This is really frustrating...
Please somebody help me!!!