Repairs Needed

We have 4 computers in our home. Two of those are desktops and two of those are laptops. One of the desktops has a bad motherboard and the other desktop needs an upgrade, like more notebook memory for example. One of the laptops has a bad AC cord connection so it won't charge. So basically, we have one main computer and that is the other laptop. It's the fastest of our computers and still in the best shape. If I had enough funds and time, I would go through and fix the other computers. We could have a small computer store in here.