first of all how did you "wipe your hard drive"?

secondly if the graphics card is an "ati" it will require microsoft framework 2.0 to in order to install fully or other wise half way through it will give some kind of error and not install fully. this is the time when the computer boots but gets stuck where it has to load the graphics drivers.

i suggest install windows again, connect the lan (assuming that you connect through the lan cable) and run the windows updater. it ensures that you get the drivers that your computer needs.

or secondly install "service pack 2" before installing any drivers