POST Error: 207-Memory initialization error on Processor 1 Socket 5.

[DS5]

We have 735151-B21. When we put there 16pcs of 708643-B21, we got these messages:

26,"Critical","POST Message","01/02/2017 10:53","01/02/2017 10:43","2","POST Error: 207-Memory initialization error on Processor 1 Socket 5. The operating system may not have access to all of the memory installed in the system.",
25,"Critical","POST Message","01/02/2017 10:53","01/02/2017 10:43","4","POST Error: 207-Memory initialization error on Processor 1 Socket 2. The operating system may not have access to all of the memory installed in the system.",
24,"Critical","POST Message","01/02/2017 10:53","01/02/2017 10:43","4","POST Error: 207-Memory initialization error on Processor 1 Socket 3. The operating system may not have access to all of the memory installed in the system.",
23,"Critical","POST Message","01/02/2017 10:23","01/02/2017 10:23","1","POST Error: 207-Memory initialization error on Processor 2 Socket 5. The operating system may not have access to all of the memory installed in the system.",
22,"Critical","POST Message","01/02/2017 10:54","01/02/2017 10:09","5","POST Error: 207-Memory initialization error on Processor 2 Socket 7. The operating system may not have access to all of the memory installed in the system.",
21,"Critical","POST Message","01/02/2017 10:43","01/02/2017 10:09","6","POST Error: 207-Memory initialization error on Processor 2 Socket 4. The operating system may not have access to all of the memory installed in the system.",
20,"Critical","POST Message","01/02/2017 10:43","01/02/2017 10:09","5","POST Error: 207-Memory initialization error on Processor 2 Socket 6. The operating system may not have access to all of the memory installed in the system.",
19,"Critical","POST Message","01/02/2017 10:53","01/02/2017 10:09","4","POST Error: 207-Memory initialization error on Processor 2 Socket 8. The operating system may not have access to all of the memory installed in the system.",
18,"Critical","POST Message","01/02/2017 10:53","01/02/2017 10:09","8","POST Error: 207-Memory initialization error on Processor 2 Socket 1. The operating system may not have access to all of the memory installed in the system.",
17,"Critical","POST Message","01/02/2017 10:53","01/02/2017 10:09","10","POST Error: 207-Memory initialization error on Processor 1 Socket 4. The operating system may not have access to all of the memory installed in the system.",
16,"Critical","POST Message","01/02/2017 10:53","01/02/2017 10:09","4","POST Error: 207-Memory initialization error on Processor 1 Socket 6. The operating system may not have access to all of the memory installed in the system.",
15,"Critical","POST Message","01/02/2017 10:53","01/02/2017 10:09","12","POST Error: 207-Memory initialization error on Processor 1 Socket 8. The operating system may not have access to all of the memory installed in the system.",
14,"Critical","POST Message","01/02/2017 10:22","01/02/2017 10:09","8","POST Error: 207-Memory initialization error on Processor 1 Socket 1. The operating system may not have access to all of the memory installed in the system.",
13,"Informational","System Revision","01/02/2017 09:43","01/02/2017 09:43","1","Firmware flashed (ProLiant System BIOS - I31 06/01/2015)",
12,"Critical","POST Message","01/02/2017 09:29","01/02/2017 09:29","2","POST Error: 207-Memory initialization error on Processor 2 Socket 3. The operating system may not have access to all of the memory installed in the system.",
11,"Critical","POST Message","01/02/2017 09:51","01/02/2017 09:07","7","POST Error: 207-Memory initialization error on Processor 2 Socket 7. The operating system may not have access to all of the memory installed in the system.",
10,"Critical","POST Message","01/02/2017 09:51","01/02/2017 09:06","8","POST Error: 207-Memory initialization error on Processor 2 Socket 4. The operating system may not have access to all of the memory installed in the system.",
9,"Critical","POST Message","01/02/2017 09:29","01/02/2017 09:06","3","POST Error: 207-Memory initialization error on Processor 2 Socket 6. The operating system may not have access to all of the memory installed in the system.",
8,"Critical","POST Message","01/02/2017 09:51","01/02/2017 09:06","4","POST Error: 207-Memory initialization error on Processor 2 Socket 8. The operating system may not have access to all of the memory installed in the system.",
7,"Critical","POST Message","01/02/2017 09:51","01/02/2017 09:06","10","POST Error: 207-Memory initialization error on Processor 2 Socket 1. The operating system may not have access to all of the memory installed in the system.",
6,"Critical","POST Message","01/02/2017 09:51","01/02/2017 09:06","12","POST Error: 207-Memory initialization error on Processor 1 Socket 4. The operating system may not have access to all of the memory installed in the system.",
5,"Critical","POST Message","01/02/2017 09:14","01/02/2017 09:06","4","POST Error: 207-Memory initialization error on Processor 1 Socket 3. The operating system may not have access to all of the memory installed in the system.",
4,"Critical","POST Message","01/02/2017 09:50","01/02/2017 09:06","5","POST Error: 207-Memory initialization error on Processor 1 Socket 6. The operating system may not have access to all of the memory installed in the system.",
3,"Critical","POST Message","01/02/2017 09:51","01/02/2017 09:06","8","POST Error: 207-Memory initialization error on Processor 1 Socket 8. The operating system may not have access to all of the memory installed in the system.",
2,"Critical","POST Message","01/02/2017 09:50","01/02/2017 09:06","16","POST Error: 207-Memory initialization error on Processor 1 Socket 1. The operating system may not have access to all of the memory installed in the system.",
1,"Informational","System Revision","12/21/2016 10:55","12/21/2016 10:55","1","Firmware flashed (iLO 4 2.50)",
0,"Informational","Maintenance","05/31/2015 23:05","05/31/2015 23:05","1","Maintenance note: IML cleared through hpasmcli",

When I put only 1 stick - it's works. When I put one or any more addition - it doesn't work. The same error.

When I removed all 708643-B21 and put old memory (256gb) it works without any mistakes. What's that?

Server information:

Product Name ProLiant BL460c Gen8
Part Number 735151-B21
System Board Spare Part Number 738239-001
BIOS Asset Tag
ROM Version I31 06/01/2015

Please help, don't know what's wrong?