I also have a Compaq Presario with the same hardware. When I first installed FC4 on it I had the exact same problems. After 5 hours of Googling I found that a lot of the problems were do to an outdated BIOS. Mine was v.11, when the newest out is v.35. Compaq has a driver page where you can download the newest BIOS (has to be installed threw Windows though. After you download it, unplug your mouse and double click the .exe and you will have the new BIOS. Re-install FC4 and everything will be working except the wireless. There are good tutorials on the net for getting this to work with ndiswrapper with your exact laptop…use Google to fond them. Hope this helps.
Registered Linux User: #393158
I AM ADDICTED TO LINUX :D