While you wait for answers, we may have found some information which could help you.
Click here for Laptop Compaq PresarioDate and Time on my HP Compaq 6715s Lap Top?
using laptop without battery?
why do i get page not responding all the time?
How do I fix my compaq 615 laptop?
fitted new hard drive to compaq c700 how come my disk wont boot ?
COMPAQ Presario 900 problem?