What drivers do I need to play World of Warcraft?

I recently took my broken laptop to Office Depot to be fixed. Something was wrong with the operating system (Windows 7) and he had to do a full restore to the computer. He fixed it but said that all the drivers on it are gone and I should download them again. I don't use my laptop for much other than music I just need the drivers to play World of Warcraft on it. It keeps freezing or crashing in mid game or even on the title screen, causing me to crtl+alt+delete then log off then back on again or even restart it all together. It has never done this before and although it can't run the game at high settings it will run it just fine. I have a HP G71-343US Notebook PC, i dont know much about computers so if you need more information please tell me what to post. It has Genuine Windows 7 Home Premium 35-bit installed in it. I just need the basic drivers or easiest to obtain nothing fancy please help!