No post on Z420 with cpu upgrade to E5-2695 V2

[numarkDM1050]

Hello. 

I have Z420 PN: 619557-001 with last version of BIOS J61 v03.96. I Change the CPU to E5-2695 V2 but I dont have post. I reset the CMOS and still don't have post. The Cooling is custom and the power supply is 500W 80+ Bronze. I try E5-2620 and E5 1620 and everything works. The purpose for the upgrade is for testing VM's and Hypervisors. RAM 32GB and 64GB kit is HP certified. The chipset C602 shod support E5-2695 V2 http://www.cpu-upgrade.com/mb-Intel_(chipsets)/C602.html. 

I'm open for any suggestions.

[Brian1965]

All HP workstations only support specific CPU's for a specific workstation model, (and motherboard boot block date), and these are listed in the appropriate HP quickspecs document. Please see this link for the Z420 quickspecs. Although some forum users may have reported success with certain non-listed CPU's, you will usually find it's E5-16xx v1 version listed, e.g. E5-2680 v1 might work - I can't say for sure or give a specific example but searching the forum is always a good place to start.

Important - You need to know your Z420 boot block date which is listed in the BIOS. if it's 2013 you can install a v2 Xeon. If it's prior to 2013 only v1 Xeon CPU's are supported. You can not upgrade the boot block date on the motherboard.

[numarkDM1050]

I' m screwed 😞 Boot Block Date: 12/28/2011 

OK is there a difference  between Z420 v1 and v2 on a hardware aspect or is a different software on a rom chip for this Boot Block?

If there is now difference on a hardware and is a rom, eprom chip is it possible to remove the chip put it on a programmer (MiniPRO)  and program it whit new Boot Block?

[SamirD]

that was my thinking about the boot block as well since I have a 2011 and I think I have run into something somewhere ion the Internet where someone has done this.  Although as cheap as the motherboard is, a quick swap will be much easier.

[numarkDM1050 · Accepted solution]

Solution :  github.com/SuperThunder/HP_Z420_Z620_Z820_BootBlock_Upgrade

My way was with removing the chip from the motherboard and read it with Minipro TL866CS
Everything else I follow the tutorial.