About a year ago i got a fully functional HP Proliant DL380 G5 with one CPU Intel Xeon E5420 (4x 2,5GHz) I had VMWARE ESXI installed, everything went perfect. I bought a extra CPU, another E5420 @ 2,5GHz on eBay. I plugged it in, and started ESXI. Purpel Crash Screen. Error code belongs to a Hardware Error. I tought i have to reinstall ESXI. Some time later, i picked up my Server again, and wanted to install ESXI. Purpel Screen, same error. Then i wanted to install Windows Server, crash. Then i have installed Debian, everything works (Dual CPU). I have unplugged Proc 2 and i installed ESXI, its working, Windows Server too.

So why ESXI and Windows Server crashed at 2 CPUs? Is the CPU broken? Should i buy 1 new CPU? But why is Debian working with dual CPU?

Random fact: If i install one CPU, install Windows Server, and set the Processors to 4 (1 CPU) and plug the second Processor in, Windows starts and Device Manager shows 8 CPUs @ 2,5GHz. But if i start without msconfig processor limitation, crash. I have activated Windows, and switched CPUs.


  • What did HP support say? – EEAA Jan 7 '17 at 15:58
  • Dont have asked them. – MrCash Jan 7 '17 at 16:07
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    The vendor should always be your first point of contact for hardware issues. It's quite likely that you do indeed have a hardware problem, that will only be able to be resolved by HP. As to why the issue doesn't express itself on all OSes? Well, different software, different kernels, etc. – EEAA Jan 7 '17 at 16:09
  • Server is 11 Years old i think, CPU costs about 7 dollar. I only wanted to know if i should buy a new CPU or if its a server issue. – MrCash Jan 7 '17 at 16:12
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    They were: 2005-2008 – ewwhite Jan 7 '17 at 16:39

Basically, you have bad components. That could be CPU, CPU socket, motherboard or RAM.

Nobody will support such old hardware. It would be far easier to obtain a known-working replacement. This equipment is cheap now, so try finding another unit.

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