Download Package driver
If you want deploy Operating System with MDT (Microsoft Deployment Toolkit) or with with SCCM (System Center Configuration Manager). Driver is more important.
You can capture driver on desktop/laptop or download package of driver. This package can be downloaded on web site of HP or Dell for example.
Package driver for Dell : Download here
Package driver for HP 32 bits : Download here
Package driver for HP 64 bits : Download here