Another tip... my recall is that the E8300 is one of the HP workstations that needs to be "stepped up" during BIOS upgrading. There are older BIOS versions that cannot be upgraded to the latest until you get them to a certain intermediate version. From there you can step up to the most recent version.
I have that in my notes.... what version are you on, and I'll check and let you know.
And, be advised that you really really should read up in the forum here about updating BIOS from within BIOS. Doing it from within your operating system is asking for a significant risk of disaster expecially if you are running Windows 10.
Corruption of you BIOS can result otherwise, and that is no fun at all.