CPU AMD 7F32 can not Run alone (Main H12DSU-iN)

[NperServer]

I have a strange case as follows. I have 6 AMD 7F32 CPUs with serial numbers for example 1,2,3,4,5,6. I use this CPU with main H12DSU-iN.

When I installed the CPU with Serial 1, the bios could not be entered.

I tried in turn, only CPU with serial number 2 and 4 can run alone, can be entered to the bios. Then I take the CPU 1,3,5,6 run together with CPU 2 and 4, they can all enter the bios, but if they run alone ==> CPU 1,3,5,6 can not be entered to the bios. So the CPU 1, 3, 5, 6 damaged? But I wonder that when running with 2 and 4, cpu 1,3,5,6 all run OK.

Can someone help me ?

Thank you so much.

 

[Wasmachineman_NL]

New or used CPUs?

 

[NperServer]

New or used CPUs?

Brand New CPU bro. Thank you.

 

[RolloZ170]

When I installed the CPU with Serial 1, the bios could not be entered.

but boots into OS ? or what ?
more details please !

 

[RolloZ170]

only CPU1 socket works as single CPU.

 

[NperServer]

but boots into OS ? or what ?
more details please !

Boot to the bios, no need OS.

only CPU1 socket works as single CPU.
=> All CPU try with CPU1 first, when CPU1 OK then I plug CPU2.

Thank you bro.

 

[A-W-A]

Do you have access to a 1P motherboard to test the CPUs in ?

 

[RolloZ170]

Boot to the bios, no need OS.

unclear.
no BIOS access but tries to boot ? or just black screen, no POST ?
don't populate any memory in empty socket CPU2

 

[NperServer]

don't populate any memory in empty socket CPU2

Yes, Just black screen, no POST.

don't populate any memory in empty socket CPU2
==>yes, I do bro.

Thank you

 

[NperServer]

Do you have access to a 1P motherboard to test the CPUs in ?

==> It mean I access to OS and use software to test CPU 2 ? (1,3,5,6)
Is that what you mean?

 

[RolloZ170]

Yes, Just black screen, no POST.

the pre POST init takes longer after AC loss/CPU change/Memory size change.
have you port80 debug card ? or use post code sniffer in IPMI GUI.

 

[A-W-A]

==> It mean I access to OS and use software to test CPU 2 ? (1,3,5,6)
Is that what you mean?

No - I mean do you have a motherboard with only a single processor slot - so you can test each CPU individually and see if they individually POST - rules out any complications from 2 CPUs and their memory support.

Andrew

 

[NperServer]

the pre POST init takes longer after AC loss/CPU change/Memory size change.
have you port80 debug card ? or use post code sniffer in IPMI GUI.

But when I install CPU 2 and 4 ==> It's OK. CPU 1,3,5,6 not OK.

Thank you

 

[NperServer]

No - I mean do you have a motherboard with only a single processor slot - so you can test each CPU individually and see if they individually POST - rules out any complications from 2 CPUs and their memory support.

Andrew

Hi, I dont have motherboard with only a single processor slot. When I install CPU 1,3,5,6 in slot1 ==> It's not OK. But combine with CPU 2 and 4 in slot 2 ==> It's OK.

It's hard to understand

Thank you bro.

 

[RolloZ170]

looks to me the NOT working CPUs can not contact the BMC/BIOS chip to start.
the second CPU2 does not not need contact to BMC/BIOS.
clean the gold contacts of the not working ones. maybe they are issues with tolerances in CPU placement.
if not work: time to ask supermicro & AMD

 

[i386]

Brand New CPU bro. Thank you.

From which shop/retailer?

 

[RolloZ170]

just a guess/a theory.
if the non working ones are Dell locked, will they be work as second CPU ?