Computer restarting randomly after adding 4GB Ram

[Radu23]

Hello guys!

I have a problem with my PC.
These are my specs:

CPU: Intel i3-4170 3.7Ghz Dual Core
GPU: Nvidia GeForce GTX 750 TI Oc
RAM: Crucial 4GB DDR3 1600Mhz 1.5V CL11
M/B : ASRock H81M-DG4

Recently , I thought upgrading with some ram was a good idea so I bought this: https://www.emag.ro/memorie-hyperx-fury-red-4gb-ddr3-1600mhz-cl10-1-5v-hx316c10fr-4/pd/DXHP1BBBM/?ref=smart-history_&recid=j8bnx21d-gkjlwxlttvx-C.c17_a187.R.F.S.VP_AP_VIS-0hx7ogr . I checked if my MOBO works with this stick of ram, checked the ddr3 type, the slot type ,the frecquency the voltage. When I placed the stick of ram the computer had no problem , I had 8GB so there was no problem until it restarted. I checked Event View Log and there was one CRITICAL error = Kernel 41 Power Error (63).

I already tried:
-cleaning my PSU, PC
-reinstalling drivers
-reinstalling windows
-switching voltages from BIOS to 1.5V to both of ram sticks
-swapping ram sticks in slots( i only got 2 slots on mobo so that was easy )

 

[feelinfroggy777]

RAM can be very finicky. Mixing and Matching RAM is not a good idea, even if it is the same model. This is why RAM is sold in kits, as they are tested to work with each other. In your case, you bought a different brand and model of RAM, so it is even more likely that this is the cause.

If you don't believe me, test the system with one stick. It will work if you put it in the right spot.

If you can, take the RAM back. If you cant, sell it on the second hand market.

You can try and buy another stick of the exact same model that you have and it might work, but it does not always work.

If you want to be sure that it works, then buy an 8gb 2x4gb kit.

 

[qwizzy]

Ram is sold in kits for a reason.
A motherboard must manage all the ram using the same specs of voltage, cas and speed.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
In your case, the new stick differs by the cas number.

Test each stick, by itself with memtest86+.
You should get NO errors for a full pass.

If they do not pass the test together you have a problem.

If you want 8gb, sell the two single sticks in favor of a compatible 2 x 4gb kit.

 

[boosted1g]

You have a CL10 ram and a CL11 ram in the same system, so instability is a good probability.

What feelinfroggy said is completely correct.
Ram is sold in kits because the chips are from the same batch and the silicon is the same sheet. The ram is then tested together to make sure it works well together.
Getting a second stick of the exact same model has the highest probability of success but even then it is no guarantee.
It is quite common for them to switch chip manufacturers from one year to the next so even though it is the same model one has say samsung chips and another has hynix.
Even if the two memory sticks are using the same chips and everything, inconsistency between production runs and silicone can still can cause two individual sticks of memory to not "play nice" with one another.

 

[Radu23]

Guys, hello again. I just got back from school so I can post about it. Yesterday since you responded to me, I went trough some BIOS settings and found some options set to auto. It was about the voltage and the DDR and mhz the ram's are set to work. So , from auto i set them to DDR3-1600Mhz and 1.5V , to both, and since then I didnt have any problem. I hope it will continue to work like this and I just saved myself from spending another 30-40$ bucks on another stick of ram. Thank you very much !