Re: Z420 Bios Upgrade for Windows 10

You are going to need to do some digging.  Here is a link that will get you the answer:  HERE

http://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/Unable-to-update-BIOS-on-Z420-Workstation/m-p/5183919/highlight/true#M9647

You'll need to find the sequence of BIOS updates, and when you do please post here to let others know for the future.

Go here....   http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04037460

The links that end with .exe work for me today.....