ze5185 does not turn on

I just went to start my laptop. It is dead. It will not even start or
boot.
The yellow light flashes and the blue HD light simply flashs on then
off.
What could be the problem here?

I thought it was the battery first but It isnt cuz it works just fine
it is just when i go to turn the computer on the yellow (power) light
blinks on and off and then the computer doesnt even turn on.
someone please help me. Any ideas anyone?
How can I get this fixed?
--Mae--

Could be the adapter has failed. Or DC jack has bad solder joint, O
worse.. Does the battery charge light come on when you plug it in