Dual channel and memory problem!

done10

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Apr 15, 2017
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I have a weird problem.. recently, I bought a G.skill kit 2x8GB (1866Hz) to run dual channel .. at first everything is okay running dual channel but after I went to bios and change the speed which was 1333 to 1600 .. my pc won't run dual channel I mean won't boot keep restarting .. so I did the following to know where the problem is:
I have 4 slots the first two near the CPU work fine but the other two disabled ( not working)

I try one ram stick for each slot and slot 3 and 4 won't boot. so I went to the bios and Channel A works fine but Channel B not working. Channel B ( slot 3 and 4) are disabled (not working).

I tried resetting the CMOS battery in case of bad settings and turned on the pc with memory sticks in slot 1 and 2, Loaded default bios settings and restarted, turned off the pc and changed to slots 1+3 and the pc launched okay, I went to the bios to see what were the settings on and a minute in the bios the pc froze and RAMs stopped working again. Now I'm running single-channel (slot 1+2).


Here the details of my system and ram.

Summary
Operating System
‏‏ Windows 10 Pro 64-bit
CPU
Intel Core i7 4790K @ 4.00GHz 48 °C
Haswell 22nm Technology
RAM
16.0GB Single-Channel DDR3 @ 933MHz (10-13-13-34)
Motherboard
Gigabyte Technology Co. Ltd. Z97-D3H-CF (SOCKET 0) 36 °C
Graphics
K242HL (1920x1080@60Hz)
Intel HD Graphics 4600 (Gigabyte)
4095MB NVIDIA GeForce GTX 1080 (ASUStek Computer Inc) 52 °C
ForceWare version: 399.07
SLI Disabled
Storage
298GB Western Digital WDC WD3200AVJS-63N9A0 (SATA ) 34 °C
931GB Western Digital WDC WD10EZRZ-00HTKB0 (SATA ) 29 °C
111GB Samsung SSD 850 EVO 120GB (SATA (SSD)) 34 °C
Optical Drives
No optical disk drives detected
Audio
NVIDIA Virtual Audio Device (Wave Extensible) (WDM)

Type DDR3
Size 16384 MBytes
Channels # Single
DRAM Frequency 933.2 MHz
CAS# Latency (CL) 10 clocks
RAS# to CAS# Delay (tRCD) 13 clocks
RAS# Precharge (tRP) 13 clocks
Cycle Time (tRAS) 34 clocks
Command Rate (CR) 2T

Type DDR3
Size 8192 MBytes
Manufacturer G.Skill
Max Bandwidth PC3-10700 (667 MHz)
Part Number F3-14900CL10-8GBXL
SPD Ext. XMP
 

done10

Prominent
Apr 15, 2017
34
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530
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How do I check for that?

I have an Intel stock cooler. Do I need to reapply thermal paste?
 

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