Whew dodged a bullet there

A couple of days back when I tried to turn on my laptop, it just refused to start.
I began fearing the worst when I connected it to the power adapter and there was no blinking, indicating that the laptop was charging. I checked for lose connections. Everything else connected to the extension board that the adapter was connected to seemed to work fine. This could mean only that my laptop or adapter had gone kaput. I was hoping it was the adapter for obvious reasons. I had a to test the laptop with another adapter, which i did yesterday. Running out of options I plugged the adapter directly to a wall outlet and voila it started working. A colleague had suggested the same but I brushed it off thinking that no way was the solution going to be that simple. So my $800 stays in my pocket.