If you have a backup of harddisk.dll (from a working HP of the same model):
This article is for educational purposes. Modifying system DLL files carries risks. Always back up your data before proceeding. hp recovery manager download harddisk dll free
HardDisk.dll is a Dynamic Link Library file associated with the HP Recovery Manager. When this file is missing or corrupted, the software cannot launch, often preventing you from performing a factory reset or driver reinstallation. How to Fix "HardDisk.dll is Missing" HP Recovery Manager: Fixing "Harddisk