after a 3 hours memtest checking i got know it is DImm slot C1 fault. am i right?

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asus x99-A MB
corsair 3000mhz 4*4gb ddr4 memory
cpu:i7 5820k@4.5ghz

i done free latest version memtest of pcmark website.

1)when i am using 4 drams in the mb by putting in slots DIMM_1,2,3,4 as per mb guide(gray ones first to fill)
[/color]mem test is failing and reboot to windows also failing@2933mhz showing 4000+ errors from start of test it is counting.
so i taken 1 slot left and checked with 3 rams now

2)when i am using 3 drams in the mb by putting in slots 1,2,3 as per mb guide.
mem test is failing and reboot also failing@2933mhz
i used 2 rams of all the 4 rams in 2 slots 1,2, combinations. there is no problem with slot 1,2 filling with any ram in dual channel combination for 2933mhz in memtest.
then i used slot 3 again
there is problem with slot 3 with any ram in triple channel combination for 2933mhz in memtest.
so i used slot 4 for 3rd ram instead of slot 3.

3)when i am using 3 drams in the mb by putting in slots 1,2,4 as per
mem test is charming the drams at 2933mhz and cpu@4.5ghz. no errors
i used all the 4 rams in 3 slots of 1,2,4 combinations. there is no problem with any ram in triple channel combination for 2933mhz in memtest.

can you help me please

how to fix the DIMM_C1 slot
 

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god it is already a doa replaced mobo. i need to make another rma for this. its matter about i have only this system to work. so it will take another 1 month or less to got new one :(
 

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is there relation with failure dimm slots with cpu bent pins. thanks for support
 

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hai there
when i am
using 4 rams in 4 slots
at stock speed it is fine,
at 2400mhz speed it is fine,
but i am reaching
at 2600mhz the sytem either crahes after booting in to windows or before booting into windows.
the slot c1 is working upto 2400mhz
but when i am exceeding 2400mhz it is crashing with 4 rams.

with 3 rams with using slots a1,b1,d1 it is working upto 2933 mhz,
but swtiching to a1,d1,c1 it is failing when i am exceeding 2200 mhz with 3 rams

please make a clarification whether it is mb slot fault or ram oc fault or both
please help me
 

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hai, i know you did said mb and i too expected that only, but the slot c1 is working for upto 2400mhz speed but when i cross this speed system never boots to windows. so i asked you again is it still slot c1 problem