RAM Sticks blocking power to keyboard mouse etc

Jomot42

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Dec 16, 2015
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TLDR at bottom

Backstory?? (Probably not relevant so skip if you want)

I've had problems with RAM before, my brother built my computer for me and due to lack of money I had to settle for 2 of his old RAM sticks which were at different frequency, this caused crashes so I bought my own 16GB Corsair RAM after I earned my own money.

Issue

Yesterday I came home and turned on my computer, it powered on as usual except my mouse and keyboard didn't light up nor was my monitor finding a signal. It was obvious that they weren't receiving power from my computer. I started to reconnect all hardware components to test which was causing the power break. I tested RAM first as it was the easiest, put 1 stick of RAM into the second pair of slots, everything received power again. So i added the other stick into it's pair and everything worked. I thought the problem was solved and went on with my day. Today, I come back from school and turn on my computer and the same thing happens, no peripherals receive power. I placed both RAM sticks back into the original pair of slots I had them in when I first had this issue, problem solved.

So why is this happening? Is it my RAM or my mobo causing a break. How do I go about testing/resolving this? This is likely to happen again after I power off my rig, I just don't want the inconvenience of switching slots again. Simplify it as much as possible for me please :)

;tldr Computer wasnt sending power to keyboard, switched RAM into different slots, resolved, next day it happened again, switched RAM back into original slots, resolved. wtf is going on
 
Solution
Yeah you can't repair the ram slot, if it has a warranty I would definitely warranty the board. If both sticks test out ok and you still have the problem having to move them around eventually moving them around isn't going to work either, so may as well warranty the board now.

The ONLY other thing that could do this (and its a huge long shot) if the ram tests out good is sleep states. Can you tell me the exact brand and model of your PSU, as well as motherboard and processor. Like I said, VERY doubtful but worth me reviewing.

Rogue Leader

It's a trap!
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Its not that its blocking power, the system is not booting due to the RAM.

Theres a number of things that could cause this, starting with being simply its not pushed in all the way and clipped in. Secondly could be a bad ram stick, and third could be a bad ram slot.

I would boot the PC with 1 ram stick and run memtest86

www.memtest86.com

Then test the other stick on its own as well. See what happens with both. If both are good then firmly seat them back in the system. Try the system through a few power cycles to see if the problem goes away.
 

Jomot42

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Dec 16, 2015
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I will test both sticks individually later tonight. However, if the ram slots are the cause, what do I do then? Do I get a replacement motherboard? I have the warranty for it
 

Rogue Leader

It's a trap!
Moderator
Yeah you can't repair the ram slot, if it has a warranty I would definitely warranty the board. If both sticks test out ok and you still have the problem having to move them around eventually moving them around isn't going to work either, so may as well warranty the board now.

The ONLY other thing that could do this (and its a huge long shot) if the ram tests out good is sleep states. Can you tell me the exact brand and model of your PSU, as well as motherboard and processor. Like I said, VERY doubtful but worth me reviewing.
 
Solution

Jomot42

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Dec 16, 2015
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I tested both sticks and no errors. After having to replace the RAM so often we can rule out the possibility of them not being clicked in fully.

Motherboard - Gigabyte z97p-d3
RAM - 2 Corsair Vengence 8GB
CPU - Intel i5-4440 CPU 3.10GHz
PSU - Antec True Power 650
 

Rogue Leader

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Moderator


Thanks for the reply. The other issue I thought it could be it is not based on my review. I would go ahead and warranty the motherboard.