Laptop charges when off but not when on

Hi,

I have been running my laptop off the charger for a few months now (the laptop does hold some charge when running off the battery, but only 30 mins tops before the battery is empty - need a new one).

Today I turned the laptop on with the charger plugged in but the laptop wasn't charging and running off the battery. On the original charger, it neither charges (light comes on) when its off or on.

So I bought a new charger but again the laptop doesn't charge when on. When the laptops off with the new charger plugged in the port lights up (I'm assuming its charging) but when I turn the laptop on, the light goes off and the laptop runs off the battery.

Is this because the battery is knackered and needs a new one? Or could this be something else?

Thanks for any help.

Yeah it sounds like you may need a new battery. My brother just had a similar problem with his laptop. It would not charge at all when on or off. They switched out the charger, that didn't work. Then they switched the connector that was in the laptop, that didn't work. Turns out it was the battery, doh!