My dell inspiron 1545 turned Itself off and won't turn back on?

My laptop was on and I had just unlocked it from lock mode and I saw that it was battery (like 15 minutes left) so I plugged my charger in. As soon as I plugged it in it just turned off. Now the charger won't glow to tell me it's charging, and the laptop wont turn on at all. When I pressed the power button it didn't do anything- there was no reaction at all. I would have thought something would have happened due to the fact the battery wasn't completely flat. So I'm not sure if my charger is broken, or that something is wrong with the laptop. Anyone suffer from the same problem? I got the laptop about 2 years ago so it's out of warranty.