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HP Z620 Workstation

Win 10 Computer with dual E5-2667 V2 CPUs and 96G ram.

Computer stopped working and will not boot - no POST and fans reach high speed and never slow down.  I have ruled out all the components by replacing them with components from a refurb that runs. 

 

The refurb has E5-2620 CPUs, so I put those in, and no help.  Then, I put the E5-2667s in the refurb and the refurb won't start - no POST.  I bought 2 refurbed E5-2667 CPUs and those won't work in either box.

 

So, I tried the crisis recovery jumper with a USB drive and bios file.  No beeps and I get no activity on the USB drive.  I am ignorant about BIOS so I don't know how to update that if the box won't start.

 

I don't know what else to try.  Any suggestions will be appreciated.  

 

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