Windows freezing in Dual Channel mode

So, here’s the deal... This is what I'm working with
Motherboard: ASUSTeK Computer Inc. P8H61-M LX3 Plus R2.0
CPU: Intel Celeron G530 DC 2.4 Ghz LGA1155
HDD 👋WD 320GB SATA II—seems to be in decent shape according to my checks
RAM: 4GB (2x2GB Dual Channel) Apacer memory
GPU: Asus Nvidia GT8600 DDR3 512 MB 128 - bit
PSU: Xsilence 600W New

I've been running Windows 7 Ultimate 64 using the drivers from the DVD that came in the box with the motherboard. Pretty sure there's no virus or anything—I ran a few different antivirus scans while in Safe Mode just to be sure.
The hard drive seems fine; SMART data looks solid... I also ran it through HD Tune Pro and everything checked out okay.
For the CPU, I ran Prime95 for about an hour and it didn't hang—temperatures stayed between 55-61°C under load and around 38-44°C at idle.
I tested the RAM using Memtest, checking each stick individually for one pass, and neither of them showed any errors... But man, once I actually start using the PC, it just freezes up.
If I pull one stick out, the computer runs totally fine, but as soon as I pop the second one back in and try to run in Dual Channel, it just locks up after maybe 15 minutes to an hour—doesn't really matter how long. The only way to fix it is a hard reset.
Both sticks are Apacer and they have the same specs, but obviously the serial numbers are different. One was manufactured in 2012 and the other in 2013.
I already tried updating the BIOS to version 1102, which I think is the latest, and I even reset everything to Default settings and pulled the CMOS battery. The machine works perfectly with just one stick. At first, I thought maybe a slot was busted, but I swapped the RAM into every single slot and it worked fine—it's just as soon as I put that second stick in that things go sideways. Both sticks are sitting at 1.50v.🤷

Are you seeing the exact same latencies on both modules? You might want to double-check that the timings in the BIOS actually match what's printed on the sticks themselves—sometimes things get wonky there. If the latencies look right, try bumping up the RAM voltage just a hair to see if that stabilizes things.

Benjamin King2 said:Are you seeing the same latencies on both modules? I mean, did you actually double-check that the timings in the BIOS match what's printed on the sticks themselves? Maybe try bumping up the RAM voltage just a tiny bit—assuming the latencies aren't the issue...

So, how am I supposed to do that? Everything in my BIOS is stuck on auto settings, and it won't let me change a single thing.

The manual claims it supports a voltage range from 1.185V up to 2.135V—and you can tweak it in tiny 0.005V increments—so you’ll just have to dig around until you figure out how to switch from Auto to Manual mode. Try messing with the +/- keys; there’s gotta be a way to change it.

Benjamin King2 said:The manual actually claims it supports a voltage range from 1.185 to 2.135V—and you can tweak it in 0.005V increments if you dig deep enough. Just mess around with the settings until you figure out how to switch from auto to manual mode. Maybe try hitting the +/- keys? It’s gotta be adjustable somewhere.

I stumbled onto some other stuff regarding voltage and latency... I think there's a setting from 1 up to 10, but honestly, I'm assuming everything else stays on auto because maybe the CPU just won't let me change it... My RAM is running at 1066 instead of 1333MHz, probably because the box for my CPU says it only supports up to 1033MHz.