Question After overclock failiure, PC only boots off 1 ram stick

Mar 4, 2019
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Apologies if this is something obvious, it's my first time messing around inside my PC and I'm basically going off what I've found through the threads here.

So I was having CPU temperature problems, I used OC Genie to downclock my system, still heat problems. Discovered the heat sink was seated incorrectly, fixed that, temp problems went away. I went into the bios, turned OC Genie back on. Now the PC wouldn't post. Removed cmos battery, no change. Removed cmos battery for longer and removed 3 sticks of RAM per a friends suggestion, success! I booted using default settings, then tried cycling my RAM sticks one at a time, two of them would not boot by themselves. Tried booting with the two working sticks together, no go. Do I just need new RAM or is there a bios setting to add more?
 
Mar 4, 2019
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CPU: i7 5820K 3.3 GHz
Motherboard: MSI X99a Raider
RAM: 16GB (4x4GB) DDR4/2133mhz Quad Channel Memory (HyperX Predator w/Heat Spreader)
SSD/HDD: 240 GB Kingston V300 SSD / 2TB HDD
GPU: NVIDIA GeForce GTX 970 4GB
PSU: Corsair 750 Watts CX750
Chassis: Corsair Obsidian Series 750D
OS: Windows 10

No my RAM is all identical, and have had this build with no problems for 3 years now.
 
Jun 17, 2024
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I had the same problem after updating my heatsink from stock to a newer one. Wouldn't let me boot up with two ram sticks. Went from upping the voltage for my RAM, which solved the problem for a short time, until it almost fried my slots and I was back to zero. Then I just re-seated the damn thing and now it works. IS THIS SUPPOSE TO HAPPEN EVERYTIME WE MESS WITH THE HEATSINK?? Please, can anyone tell me why this happens?