If you have ever tried to mix Registered DIMMs (RDIMMs) with Unbuffered DIMMs (UDIMMs) on an S77-based board, you know the frustration. Later firmware versions implement stricter memory training algorithms and improve stability with high-density 32GB LRDIMMs.
The S77 firmware serves as an umbrella for several critical sub-components: Processor & Graphics : It includes the AMD GOP EFI Driver AMD Legacy vBIOS hp s77 system firmware
Disable BitLocker drive encryption temporarily to avoid recovery key loops. If you have ever tried to mix Registered
Open PowerShell as Administrator and run: hp s77 system firmware
Right-click System Firmware in Device Manager and select Update Driver -> Search automatically .