you MIGHT be able to get away with only purchasing a new video card, but my thinking is if there is one thing wrong with the motherboard, how do we know that there are not other things wrong with it, and how will one failed device on the motherboard affect its other devices?
What exactly is a motherboard?
this is a motherboard. it is what every device in your computer hooks up to. they come in many different shapes, sizes, makes, and models.
Is it something I can buy & install myself?
you
can buy and install it yourself, but based on your first question, i would
strongly recommend letting someone else buy and install it.
Seems to me that my old computer guy replaced my motherboard once before.
on the same machine?