HP Pavilion 6700 series won't charge

We thought my charger was crapping out on me about a month ago so we finally replaced it when jiggling it around stopped working. This charger doesn't work either, so we're pretty sure it's something on the inside. My computer isn't under warranty anymore and we don't want to fork out the money to fix it if it's something we can fix on our own. It's an HP Pavilion 6700 series and I've always seemed to have problems with it ever since I got it. If it will cost the same amount to fix it as it will to get a Mac Notebook, I'm just going to get one of those because I've never heard anyone complain about them. My husband has tried messing with it most of the night- ever since we realized the cord wasn't at fault- but hasn't been able to cure the problem. It seems if he just barely sticks the cord in, it will charge for more than thirty seconds.