Sp65563.exe is a specific software package released by Hewlett-Packard (HP) to provide HP Hotkey Support
The Windows power settings may lack a brightness slider if this driver is missing or corrupted. Dead Hotkeys: Sp65563.exe
Always remember: When in doubt, scan first, delete second. Never run unsigned executables from untrusted sources, and keep your HP drivers updated through official channels only. Sp65563