This model and Operating System is not supported by Dell.
Remarks: This system won't run Windows 7 32 bit very well as it is an old model and the cost of a license probably is more than the entire laptop is worth.
The video capability is below system requirements the Vista GM915 HP driver will work for WIndows 7 32 Bit but not Windows 8.1 32 Bit.
Recommended Hardware Upgrades
It is recommended 2 GB of RAM to be installed. Windows 7 32 bit won't install unless you have at least 1 GB of RAM installed.
The hard drive interface is IDE and hence a SATA SSD cannot be installed.
Refer to the Service Manual when Replacing Hardware.
Install the registry file and then the audio driver. New untested.
Try in order latest first, if it doesn't work try for an older version.
See Installing the Windows XP version of Dell Quickset in Windows 7 32 Bit.