How do I check the current BIOS version on the HP Z420 Workstation?

To check the BIOS version, power on the workstation, press Esc during boot up, then press F10 to enter the F10 Setup utility, and navigate to File > System Information. Alternatively, on Windows 7 systems, go to Start > All Programs > Accessories > System Tools > System Information and find the line labeled 'BIOS Version/Date' in the right pane. Note the version and date and compare it with the versions on the HP website at http://www.hp.com/go/workstationsupport. (Page 5)