HP Pavillion zv5000 Power issue

Hey everyone.

I have an HP Pavillion zv5000 notebook computer. It's been fine for a
while, but now it won't turn on. I've done some research and I have
found that it may be the power jack that needs to be replaced? What
happens is that when I plug it in, the power light on the front just
blinks. When I go to press the power button the power light comes on
for about a second and then goes off. Therefore it won't power up.
Just wondering if anyone could shead some light on this issue. Let me
know, and all help is greatly appreciated!

Thanks,
Allen