Computer Won't Boot Without 1 Ram Stick Removed and Replaced After Power Outage

Alion

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Oct 22, 2014
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4,510
So I just recently built my PC, and have been using it for 2 months with no issues. The other night I had left it running over night, and woke up to flashing clocks all over the house (assumed to be a power outage). When I tried to power the computer back on, the LEDs came on, and some fans (the CPU fan spun briefly and then quit), but no signal was going to the monitor. I tried turning on and off a few times, and the computer would sometimes stay stuck in this state, or try to restart on it's own (to no prevail).

The first thing I tried was unplugging the power cord and pressing the power button for ~1 min to reset the motherboard. This didn't work.

I then unplugged everything from the PSU and plugged it back in - again, this didn't fix my problem.

Next I pulled out 1 stick of RAM, and tried booting up and it did work - everything powered on just fine. I then shut down, installed the other stick of RAM, and it booted up, and recognized all 16GB of RAM! I used the computer for ~8 hours (thinking the problem was fixed), but at the end of the day I shut it down and tried to power back on, and again it got stuck with the LEDs on but no full boot up.

I'm wondering if anyone has encountered something like this before? I have yet to do a full re-seatting of all components, which I do plan on doing. I'm able to get the computer to boot up by pulling and replacing one stick of RAM every time (not sure if this is really that safe).

I should mention that I did have the computer plugged into a surge protector when the power went out, and I've tried plugging it into various different plugs around the house.

Thanks for your help!

Parts List: http://ca.pcpartpicker.com/user/Alion/saved/Q4JgXL
 

Alion

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Oct 22, 2014
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4,510
So I realized that my RAM is 2133 MHz, but was set at 1333MHz in the BIOS. I increased the clock speed of the RAM, and then when I tried to boot up, the computer would cycle power on and off but never reach POST. So I reseated the whole computer, and in doing so noticed a missing standoff on the mobo. Replaced that, and also reset the BIOS and CMOS. After all was said and done, I still have the same problem where LED and some fans power on but it won't POST until I pull a stick of RAM and replace it.

The issue I had with RAM clock speeds makes me think it's the PSU, since 2133 would pull more power from the PSU. Does that make any sense?
 

quailgg94

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Jun 23, 2015
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4,510
some ram types have to have a BIOS clear if u remove their sister pair. also some computers require dual ram slots to be both filled with ram atleast this is how i see it