After formating my hard drive minecraft won't load?

Hi i'm using my old computer now and before it was laggy. Then i formated the hard drive and installed windows 7. I downloaded minecraft and it says my graphics driver is out dated. But i know it isn't. I've checked time and time again. I'm on a dell dimension e510 running windows 7 home premium. I'm pretty sure it is that i reformated the hard drive because other people on forums have had the same problem as me. If anybody has a fix that would be AMAZING!

Have you downloaded Java? If not, go to https://java.com/...m/download and install it

You need to have Java installed, in order to play Minecraft