Sounds like some drivers still need to be installed. Did you use all of your driver installation CD's that shipped with the notebook? My Inspiron 5150 came with the driver CD separate from the Windows XP reinstall CD.
Xp will not boot I think it could be a hardware problem bc the hard drive works fine in another laptop (dell inspiron 5100). i just formatted and reinstalled windows and when it starts up it asks how i want to start it normally doesnt work bc it goes to a blue error screen same thing with safe mode. safe mode with command promt work, anyone know what could be the cause? or have any tips? ill try anything