I've got a Presario 700 that works fine when it's plugged into the wall. But if I turn it one when it's unplugged, nothing happens. No lights blink, no fans spin. Nothing.
My first impulse was to buy a new battery, but geez those things are expensive. So I'm wondering if the problem might be elsewhere. The laptop already had another power issue in which it took bad temperature readings and would shut itself down at random. A simple download fixed it. I'm wondering if that fix could have caused a problem with charging the battery. Any ideas?