Computer stability problem

[zongyf]

Hi.

I just built my Skylake i3-6100 PC and I did some very very light blck overclocking on it (3.8ghz with stock cooler, crucial 2133mhz DDR4 to 2600mhz). It passed all the stability tests (Prime95, Intelburn, Memtest) and  the core temp never exceeded 82C (hovering around 75C). However yesterday, while I was streaming video, the screen suddenly went black and I needed to force my PC to reboot. It happened again today and I don't know what's the problem.

Does anyone has any idea what happened? Thanks in advance for your help.

[GarnetDevil]

Are you sure the screen went black because of the CPU? It could be the GPU's fault

[pwn_intended]

Stress testing will not ALWAYS make instabilities show. Sometimes tasks such as opening a specific program that isn't CPU intensive can trigger a crash. Its kinda a crapshoot. Try toning down the OC and see if you still have the issues.

[Tieox]

I would wager a guess at the GPU OC being the issue.  

[zongyf]

4 minutes ago, GarnetDevil said:

Are you sure the screen went black because of the CPU? It could be the GPU's fault

I'm still using the iGPU, am waiting for the RX 470

 

[mikeeginger]

Try using Adia 64 to stress all parts of the system 

 

[zongyf]

Can it be the monitor's fault. I'm using the VGA cable that comes with it.

[mikeeginger]

Just now, zongyf said:

Can it be the monitor's fault. I'm using the VGA cable that comes with it.

Try using a full system stress test eg Adia 64 

If it happens again back of the overclock 

[zongyf]

Just now, mikeeginger said:

ry using a full system stress test eg Adia 64 

If it happens again back of the overclock 

Doing it now. But when do I stop the test?

[Windows7ge]

When the RAM & CPU is overclocked via FSB on the 2011_V3 socket I know you have to play with the CPU_VTT voltage which (correct me if I'm wrong) is the voltage that goes in between the CPU and the RAM. increasing that gradually might help. Also loosening the timing on the RAM and maybe bumping up the RAM 0.5V could help. Alternatively you could reset the RAM to 2133MHz and run it at factory. Then keep the CPU OC.

[mikeeginger]

Just now, zongyf said:

Doing it now. But when do I stop the test?

Depends on how long you want to

If it doesn't crash with in the first 40mins 1hr then odds are it wont 

 

[zongyf]

Just now, mikeeginger said:

Depends on how long you want to

If it doesn't crash with in the first 40mins 1hr then odds are it wont 

Thanks.

[zongyf]

1 minute ago, Windows7ge said:

When the RAM & CPU is overclocked via FSB on the 2011_V3 socket I know you have to play with the CPU_VTT voltage which (correct me if I'm wrong) is the voltage that goes in between the CPU and the RAM. increasing that gradually might help. Also loosening the timing on the RAM and maybe bumping up the RAM 0.5V could help. Alternatively you could reset the RAM to 2133MHz and run it at factory. Then keep the CPU OC.

Is that OK if I set the voltage to auto so the system do it itself?

[Windows7ge]

Just now, zongyf said:

Is that OK if I set the voltage to auto so the system do it itself?

Don't use AUTO, AUTO is default voltage.

[pianoguy15]

Can't help with the overclocking troubleshooting, but it could also be as simple as a video card driver. I've seen driver issues cause random behavior with monitor sleep/wake etc.

[zongyf]

1 minute ago, Windows7ge said:

Don't use AUTO, AUTO is default voltage.

Is 1.2 Vcore OK then? I did some really small overclock.

 

 

[Windows7ge]

9 minutes ago, zongyf said:

Is 1.2 Vcore OK then? I did some really small overclock.

 

 

You're on the Z170 chipset, I'm on X99, I cannot verify what a proper OC voltage is for your processor. All I can do is tell you what voltages to play with.

[zongyf]

4 minutes ago, Windows7ge said:

You're on the Z170 chipset, I'm on X99, I cannot verify what a proper OC voltage is for your processor. All I can do is tell you what voltages to play with.

Ok, thank you