Recently my laptop has JUST today lost its use of the power cord. Maybe its because i accidentally sat on it but it just stopped giving power. I then tried to replug it or shut it down and try different solutions to no avail. This is the second time that this power cord of mine has failed to work...

What should i do? It sounds wierd too, whenever i connect the power cord to something that gives me electricity, it has this faint beeping that is going on inside the brick. I dont know if that has any bearing to whats going on or what does it mean. Any ideas..? I hate for this laptop to be out of use since i need it for schoolwork and daily computer usage. It is currently shut down conserving Battery. Also why does this happen to the power cord..? >> is it a common problem?