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?

A Compaq 2500 hey?

Which one: http://h20180.www2.hp.com/apps/Lookup?h_page=igmx&lang=en&h_client=s-s-r2515-1&cc=ie&h_query=presario+2500&y=3&h_pagetype=s-001&x=6&h_cc=ie&h_lang=en

It is a
2511 EA .

Manuals

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&cc=ie&dlc=en&product=299070&lang=en&

From the page linked above

Thanks for the link.