Create an account on the HP Community to personalize your profile and ask a question
03-10-2017 10:32 AM
Hi, I have a Z620 Dual Xeon E5-2660 PC. During POST procedure, there are error messages abot QPI links:
932 - Warning one of the QPI links is not operating
929 - Fatal MCA error. QPI0 error detected CPU0
929 - Fatal MCA error. QPI1 error detected CPU1
When I press F1 the system boots and works normally.
When I disconnect a riserboard with a second CPU there are no errors at all.
Is there any solution?
03-10-2017 01:53 PM - edited 03-10-2017 02:43 PM
The Z620 can run some processors that have only 1 QPI link, and you cannot add a second processor to one like that. You need 2 QPI links for each processor to run 2 processors.
The E5-2660 processors have 2 QPI links each.....
1. Update your BIOS to the latest. Set BIOS back to defaults after clearing the CMOS fully by the special methods of disconnecting everything for several hours and do several cycles of press/hold the power on button then cmos button then back and forrth 5 times while also shorting the 3 prongs on the power supply with your fingers to draw off all power from all capacitors/circuits everywhere in the box. Video cables can carry low voltage to the motherboard, for example, so I do mean disconnect everything of all types before you start this process. Go overboard, then hook back up and boot into BIOS and set to defaults (under the first tab), and save the changs on the way out of BIOS. Check again for if this fixed the problem. If not........
2. I'd then remove the second processor from socket CPU1 and test out the one in socket CPU0. I'd clean the pin pads on the removed processor with DNA (tiny amount... slightly damp paper towel. I'd blow out the socket with compressed air and try again. A little debris might be in the wrong spot. Don't bend the very delicate pins.... protect them carefully. Put the processor back in with fresh Noctua thermal compound (so thin you can almost see through it).
3. If no joy I'd then do that all with CPU0 processor/socket and test again.
4. If no joy I'd buy one used E5-2660 off eBay. There is only 1 sSpec code, so look for that under eBay search of SR0KK. That is a zero in the middle. About $50.00 USD. Nice buy.... these are $1329.00 new from Intel if you want to go that way......
5. Repeat steps 2-3 trying to find what processor is bad.
6. Get back to us with what was the solution.... it will be interesting to know. I predict you will solve this.
04-20-2018 02:03 AM
Hi Michael! I had the same problem as you and fixed this by reseating the memories (RAM) in the ram sockets.
I picked them off, cleaned with isopropylic alcohol and found a small white paint on 2 of the copper connectors.
I cleaned them, installed RAM memories back in sockets in another order and voila! First boot without "MCA 932 QPI link "error. The message shown is same as yours.
My workstation: Z620 - Dual Xeon E5-2690 with 4x 8GB DDR3 EEC
04-20-2018 02:04 AM - edited 05-06-2018 11:42 AM
Hi Damo! I fixed the same error, same workstation and posted the solution here.
UPDATE: Problem is up again. Today after 15 days, my Z620 froze 2 times followed by self shutdown.
On the 2nd shutdown, I booted the PC and it showed again the QPI links error. Same as before!
I don't know how the RAM memories can move themselves inside the case by their own? Or .... I don't know what is happening.
Last time I also upgraded the BIOS to J61 3.92 from 3.91