HP Compaq Presario,Presario 7895 Supplementary Manual page 69

If a driver is accidentally deleted or the operating system is reinstalled, the driver
subdirectory allows you to restore individual drivers rather than restoring all the
original software. The drivers you can restore are Audio, Video, TouchPad,
Display, Modem, and CD-ROM.
To re-install a driver, complete the following steps:
From the Windows Taskbar, click Start , point to Programs , and click
1.
Windows Explorer .
Navigate to the CPQDRV folder on the hard drive and double-click it.
2.
Find the folder of the device you wish to reinstall and double-click it.
3.
Double-click the setup program for the driver you wish to reinstall.
4.
Follow the on-screen instructions.
5.
Drivers may also be reinstalled by selecting the Custom Restore option from
QuickRestore. Refer to QuickRestore for more information on how to reinstall
drivers using the Custom Restore option.