Cannot find drivers for compaq 710tu running xp

HP bought out Compaq so you can download drivers and manuals from
www.hp.com

You can search for the model ie 710TU or have it auto detect the model.
The following link should take you to the main page for the 710. There are XP drivers on a seperate page.

http://h10025.www1.hp.com/ewfrf/wc/product?product=3540082&lc=en&dlc=en&cc=ca&os=228&lang=en

You should be able to use the xp universal driver for video. Not sure what to say about the bus controller as that is a hardware item and usually doesn;t require any drivers. If you are stuck you can order the system disk from HP. Usually somewhere between free and $10 depending on who you talk to and how old the system is. I would talk to HP support either email or phone them and they probably will be able to give you direct links to the files you need.