Comprehensive Detailed Explanation with all CompTIA Server+ SK0-005 Study Guide References:Firmware incompatibility is a common issue when upgrading hypervisors, especially on legacy hardware. Upgrading the firmware ensures that the hardware is compatible with the new hypervisor version. This includes updating BIOS, RAID controllers, and network adapters to the latest supported versions. * A. New installation:Risks data loss and is unnecessary if the issue is firmware-related. * C. Increasing RAM:May enhance performance but does not resolve compatibility issues. * D. Hardware upgrade:A last resort if firmware updates do not resolve the problem.