Why can't two identical sticks of RAM start?

Question

Iron

Collected on the outlet computer. Components:
* Asus B150M-C D3 (s1151, Intel B150, PCI-Ex16)
* Intel Core i5-6500 3.2GHz/8GT/s/6MB (BX80662I56500) s1151 BOX
* Asus PCI-Ex GeForce GTX 750 Ti Strix 4096MB GDDR5 (128bit) (1124/5400)
* 2 * Kingston DDR3-1600 8192MB PC3-12800 (KVR16N11/8_KVR16N11H/8)
So here is the problem with two RAM sticks. Sometimes it won't start until you get one of the bars. You press the power button - the coolers spin up, stop, spin up, stop. If you get any of the bars - it starts perfectly. Although yesterday I had a great start on two slats. What could be? What can be done?

Answer 1

Tried in a variety of slots - the result is the same.

You do not need to try on a variety of slots. You need strictly defined, indicated in the instructions page 1-7.
The sequence of correct actions.
1. Insert RAM #1 into slot A1 and run MemTest.
2. Remove RAM #1 from A1 and insert RAM #2 into A1 and run MemTest.
3. We insert RAM No. 1 into slot A1 , and RAM No. 2 into slot B1 and run the MemTest check.

Answer 2

Do you put in one channel or two?
try superuser.com/questions/155615/windows-7-x64-how-c...

Answer 3

wipe the memory contacts with a cotton swab dipped in alcohol.