Question Installed second set of RAM, now computer continuously restarts.

Sep 11, 2019
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(Originally posted this under another category, but I think this might be a more relevant one - sorry for any redundancy)

Hi All,

I recently installed a second set of RAM (2 x DIMM) into a computer I recently built. It already had two sticks in there (2 x 4GB modules), and I wanted to install another pair of the exact same RAM to up the total to 16 GB. I took all the standard precautions (anti-static strap, did work in non-carpeted room), but when I restarted the machine, it would run for 30 seconds or so and then reboot on its own. No image was displayed to either monitor connected; it would just run for a bit, and restart. All fans will spin (case fans, CPU fan, PSU fan) and RGB features are still powered, but no OS or UEFI will display to the monitors. If I don’t turn it off, it will just continue to reboot, ad infinitum.

To troubleshoot, here is what I’ve tried so far:

Removed new RAM and tried starting with only the old kit slotted in its original slots.
Removed & reset CMOS battery.
Removed video card and tried restart (video card disconnected from mobo & psu)
Removed all RAM sticks and tried to restart (not sure if this would really help, but thought I would try it, while I was in the case).
Attempted to find light on motherboard to see if it was red, green, or otherwise, but the board doesn’t appear to have one.
None of this changed my results.

My current thoughts are that this is related to either the motherboard or PSU. That being said, I’m not sure how likely it could be the PSU, as everything seems to get power (anybody disagree with this assumption?). One thing I may want to mention is that the PSU is universal for voltage and has an American plug, but I live in South Korea, and plug that into a standard universal power strip (which does NOT have surge protection, I believe). I doubt this affects anything, but thought it may be worth noting.

Another thing I researched is that the motherboard only has official support for 2 DIMM of the RAM I bought, according to the memory QVL. I found this out after the fact, but my understanding is that 4 sticks will probably work, but only 2 are officially supported. Would attempting to install the extra 2 cause a catastrophic failure?
(DIMMs are PV48G300C6K)

https://www.asrock.com/MB/AMD/B450M Pro4/index.us.asp#MemoryPR

Anybody have any ideas of how to fix this, or to at least narrow down what the culprit is???

Parts listed below:

Part Picker Link:
https://pcpartpicker.com/user/gangel79/saved/#view=wCYhgs

CPU
AMD Ryzen 5 2600 3.4 GHz 6-Core Processor
CPU Cooler
Deepcool GAMMAXX GT 29.5 CFM CPU Cooler
Motherboard
ASRock B450M Pro4-F Micro ATX AM4 Motherboard
Memory
Patriot Viper 4 8 GB (2 x 4 GB) DDR4-3000 Memory
Memory
Patriot Viper 4 8 GB (2 x 4 GB) DDR4-3000 Memory
Storage
Seagate Barracuda 3 TB 3.5" 7200RPM Internal Hard Drive
Storage
Crucial P1 500 GB M.2-2280 NVME Solid State Drive
Video Card
Zotac GeForce GTX 1660 6 GB GAMING Video Card
Case
Cooler Master MasterBox Q500L ATX Mid Tower Case
Power Supply
EVGA BT 450 W 80+ Bronze Certified ATX Power Supply
Case Fan
Deepcool RF 120 (3 in 1) 56.5 CFM 120 mm Fans
 

Ralston18

Titan
Moderator
This:

" motherboard only has official support for 2 DIMM of the RAM I bought, according to the memory QVL. I found this out after the fact, but my understanding is that 4 sticks will probably work, but only 2 are officially supported."

Key words being "probably work" - with respect to your computer the answer is likely "no, it will not/does not work".

However the concern is now, that after restoring the last working configuration, the computer goes into continual restarts.

I would indeed suspect that 450 watt PSU.

Especially if it is an older PSU and/or has been subject to heavy loads - may have been at some threshold working status and the changes etc. pushed it into a premature EOL (End of Life).

Another thought is that while you were working inside the case, despite all precautions, something else was bumped loose or was not fully and firmly reconnected.

If all else has failed, then I would consider replacing the PSU.

Get the computer working again and then revisit ways to increase the RAM in full compliance with the Motherboard's specifications. You may be able to do that just with two slots - no need to use/fill all four per se.

Last thought - some motherboards require that the first RAM module be inserted in a specific slot; e.g. #2.

Check the motherboard's installation manual to determine if the order of physical RAM installation is specified.
 
Sep 11, 2019
17
3
15
0
This:

" motherboard only has official support for 2 DIMM of the RAM I bought, according to the memory QVL. I found this out after the fact, but my understanding is that 4 sticks will probably work, but only 2 are officially supported."

Key words being "probably work" - with respect to your computer the answer is likely "no, it will not/does not work".

However the concern is now, that after restoring the last working configuration, the computer goes into continual restarts.

I would indeed suspect that 450 watt PSU.

Especially if it is an older PSU and/or has been subject to heavy loads - may have been at some threshold working status and the changes etc. pushed it into a premature EOL (End of Life).

Another thought is that while you were working inside the case, despite all precautions, something else was bumped loose or was not fully and firmly reconnected.

If all else has failed, then I would consider replacing the PSU.

Get the computer working again and then revisit ways to increase the RAM in full compliance with the Motherboard's specifications. You may be able to do that just with two slots - no need to use/fill all four per se.

Last thought - some motherboards require that the first RAM module be inserted in a specific slot; e.g. #2.

Check the motherboard's installation manual to determine if the order of physical RAM installation is specified.
Thank you for your input.

I've checked all the mobo/psu connections, reconnected them and tested again, but to no avail. From the research I've done and folks I've talked to, it seems the most likely culprit is the PSU (its only a month old, but from what I've heard, not a great brand, and the wattage could be low.)

That will be the next thing I test, and I'll post with any updates.
 
Memory
Patriot Viper 4 8 GB (2 x 4 GB) DDR4-3000 Memory
Memory
Patriot Viper 4 8 GB (2 x 4 GB) DDR4-3000 Memory

Such combinations have no guarantee to be compatible together. Since you can make any kind of combinations you want, your free to do your own compatibility testing.

What is guaranteed is the use of a single kit.
 
Reactions: righteoustrash
Sep 11, 2019
17
3
15
0
So, status update....

I got the replacement motherboard back from ASRock a couple of weeks ago. Reassembled everything the way it was before, with a few exceptions:


  1. Went ahead and got 2 x 8 GB sticks of the same model RAM to replace the 2 x 4 GB.
  2. Upgraded the PSU to a Seasonic Focus Plus 80 plus gold 550 W unit (already tested against PSU failure, but I thought I'd just be safe and get something a bit better quality).
Computer works like it did before, now. Seems extreme, but ultimately, plugging in the extra RAM fizzled something on the MOBO.
 

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