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Only half of RAM is used on AB350 Pro4
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datonyb View Drop Down
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Points: 3139 		Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Topic: Only half of RAM is used on AB350 Pro4
    Posted: 06 Sep 2017 at 12:52am
also can be the ram stick wasnt inserted fully
weve had several threads solved by reinserting the ram with a bit more force and checking for the double click sound
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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Ricky View Drop Down
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Points: 43 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ricky Quote  Post ReplyReply Direct Link To This Post Posted: 05 Sep 2017 at 3:09pm
just fyi, last time i experience this issue. It turn out one of the RAM stick is defective.
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ASRock_TSD View Drop Down
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Points: 8787 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ASRock_TSD Quote  Post ReplyReply Direct Link To This Post Posted: 05 Sep 2017 at 3:06pm
Dear y2000_lion,

Greetings, this is ASRock TSD.


We install the same system configuration to perform the test. 

[Config.]
CPU: AMD Ryzen 5 1400
DRAM: Corsair CMK16GX4M2A2666C16 (2x8GB)
BIOS: P3.00
OS: Windows 10 64bit

Please refer our test result, the memory size can be detected normally under Win10 64-bit.


Regarding this symptom, we provide some suggestions for verifying:
1. Please refer to the user manual (page.25) to clear CMOS (Please shut down the AC power).
2. Please only install the necessary devices (CPU, one stick memory, system disk and VGA card) to verify.
3. Please re-install memory to the system and install one stick memory to another slots.(A1,A2,B1,B2)
4. Please clean the Goldfinger parts of memory to verify.
5. If possible, please install another CPU and memory to the system.


Thanks!

All the best,
ASRock TSD



Edited by ASRock_TSD - 05 Sep 2017 at 3:07pm
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Maddreg View Drop Down
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Points: 32 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Maddreg Quote  Post ReplyReply Direct Link To This Post Posted: 05 Sep 2017 at 2:54pm
did you put ram sticks into A2B2 slots?
ASRock AB350M Pro4//Ryzen R6 1600@3800=1.275v+Macho rev.B//GTX 1060//Ripjaws V@3200 16-18-18-38-56=1.4v (2x8Gb)//Corsair RM550x
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y2000_lion View Drop Down
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I can?�t use my whole RAM capacity. I tried a 16GB kit (2x8GB) and only 8GB usable in windows 10 and the other 8GB is "Hardware Reserved". 
The 16GB RAM kit is actually listed in the memory QVL (CMK16GX4M2A2666C16) of the motherboard.
In bios the 2 DIMMs was detected properly with the correct capacity.

Can someone help me, thanks.



Edited by y2000_lion - 05 Sep 2017 at 2:17pm
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