Guys? Seriously? Logic?
The laptop doesn't NEED the battery to turn on, it simply needs POWER, so it can turn on using just the AC adaptor and having all batteries uninstalled. So if the laptop won't turn on at all without any batteries but with the AC adaptor plugged in, it's safe to say that either the AC adaptor or the AC adaptor port on the laptop is dead. It's certianly not the battery.
Yeah sorry for not being pro enough to trust my own logic about this kind of thing. And gosh like I said, I was going to wait for an answer from someone who knew anything about it (since Clayton clearly didn't really know and was just offering ideas [thanks for that at least btw])
Thought it was a bit silly myself that it'd be a battery issue if the computer could run off the battery, but people I asked were all "OH IT'S THE BATTERY", so I was just trusting the judgement of other people who I was assuming probably knew more about it than me. Also was thinking it was a bit silly that the AC stuff was off, since the light was working, and it responded to being plugged into the laptop. And she bought a new AC adapter thingy and whatnot, and it still didn't work (though sorry I forgot to mention it in the OP).
She got it checked an hour or two ago though, they say it could be a problem with a circuit where you plug in the charger, and it blew. Something like that anyway.
Also yeah in case you missed, this isn't actually my laptop, it's a friends'. Obviously earlier on I wasn't in a good frame of mind and my logic was just awful and I thought it'd be easier to just pretend it was mine? Gosh what am I.
Edit: Pro <: I guess you probably got it right lol
And I should probably send my Toshiba back as well :/ It was meant to come with a webcam, but it just has a space at the top where it's meant to be. Also the keyboard is laggy sometimes, which is pretty weird. Factory faults or something? Oh well I got it like 3 weeks ago or something so I'm not out of warranty yet or anything.