have a compaq presario 2500 laptop. When i boot it up , it was uncertain of where to boot from. So i reset it, now it tries to initialise MBA, claims there is a cable media fault and cannot find the os ?! I presume it is the Hard drive ? Another issue is that i cannot open the laptop ? I removed all the screws ,battery,hard drive and it is still stuck seemly at the rear of the laptop near the screen? Is there some magical procedure to open the laptop?