What are the possibilities that RAM installed in inappropriate slots would interfere with Win 10 booting?

Satrun9

Reputable
Nov 2, 2015
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4,510
Hello everyone!

I recently tried upgrading the ram of my system to ADATA USA XPG V1.0 OC Series 16GB DDR3 2133MHZ but I plugged them in randomly (2 DIMMS in each block, not in the 1st slot of each block as you're usually supposed to do).

I tried to enable the XMP which stopped the system from booting at all. I flashed my BIOS to the latest version and tried enabling XMP which worked this time around. In the middle of all this, I also did 'Load optimized settings'.

My problem is, ever so often, the system stops recognizing my primary HDD and tries to boot from another HDD present. When I enter the BIOS, I don't see my primary HDD listed at all in the BIOS features where you can set the boot sequence. However, when I go to the 'Exit' page, where you have the 'Boot override' options, I can see my primary HDD listed and I can select it to boot into Win 10 successfully. I hope this is making sense. In a nutshell, I tried to change RAM, made some changes in the Memory frequencies (which since then has already been changed to optimized setting). What could have gone wrong between now and then?

Thanks for reading!

My system details are:

CPU: Intel(R) Core™ i7-3820
Cooler Master Seidon 120M Liquid Cooling System 120MM Radiator
1TB Western Digital Caviar Black SATA-III 6.0Gb/s 7200 RPM HDD
8GB (2GBx4) DDR3/1600MHz Quad Channel Memory (which I switched to ADATA USA XPG V1.0 OC Series 16GB DDR3 2133MHZ )
GIGABYTE X79-UP4 Intel X79 Chipset Quad Channel DDR3 ATX Mainboard w/ Ultra Durable 5 (BIOS F7)
EVGA SuperNOVA NEX750B 80 Plus Bronze Modular Power Supply
NVIDIA GeForce GTX 660 2GB 16X PCIe 3.0
 

Satrun9

Reputable
Nov 2, 2015
6
0
4,510
Thanks for responding guys!

No, the BIOS time and Windows time displayed in OS are both fine. I rearranged the DIMMs to Slot 1,2,3,4 in suggested order and restarted the system as I write this. Fortunately the system booted fine into the OS. Now, while it may sound as if putting the DIMM in correct order fixed the problem, I'm a little skeptical about it and wouldn't suggest this to be a resolution till someone who knows better confirms. Or maybe, it's just a system specific issue that affected only my system. In case the problem recurs, I'll post again.