What is the appropriate action if a Z220 Workstation fails to boot without displaying any errors?

Running HP PC Hardware Diagnostics using a specific key combination is the most appropriate action when a Z220 Workstation fails to boot without displaying any errors. This diagnostic tool is designed to identify hardware issues by running tests on essential components such as memory, storage, and other critical systems. By initiating these diagnostics, technicians can pinpoint hardware failures or potential problems that may not be apparent through initial observation, especially in cases where the workstation does not provide any on-screen error messages.

This approach allows the technician to gather concrete data about the workstation's condition, which aids in effective troubleshooting and reduces the risk of unnecessary component replacements. If diagnostics reveal faults, the technician can then take informed steps to resolve the specific issues identified. In the absence of such diagnostics or indications of hardware failure, checking connections or performing resets may not address underlying problems and could postpone resolution unnecessarily.