overclocking PC Switches on, off then back on after Overclocking?

[TipsyDriver]

Hi,

 

So recently I've been getting into overclocking cause my CPU (i7-8700k is liquid cooled, not delided). I followed a guide online and pushed the CPU to 5Ghz following the 1.35V was according to some Forums a decent voltage, however, I've switched off all of my CPU and Memory overclocks (my GPU is still clocked, it's a 1080ti at 2088Mhz). The problem I'm running into is whenever I start my PC with any settings (from my testing) changed in the BIOS as soon as I press the power button everything lights up for approx 0.5 seconds, switches off then back on again and it loads perfectly fine. I have no idea why this is happening and if it should be happening at all, if I turn everything back to default it starts normally without a hitch. 

 

Leading onto my other question: the recommend voltage for 5Ghz is apparently 1.35V (I don't know if this is false or not), however, leaving the voltage settings on Auto in the BIOS, when I check CPU-Z and Corsair Link (they show similar results within 0.001 of each other) they're both hanging around 1.392 to 1.4v range, this is higher than what I've seen is needed for 5Ghz, is that right?

 

Any help/suggestions would be greatly appreciated

[GrockleTD]

try lowering the voltage to 1.3 and reducing the overclock slightly

[partymarty]

What mobo? 

[iRileyx]

From the looks of it you're only running at the turbo speed on that cpu-z screenshot, so it sounds as though your OC is crashing and defaulting back to stock settings. When you go into the BIOS after it does the on, off, then back on, does it still show the 5Ghz OC as being applied, or is everything back to normal/stock settings?

Edit - oh just read the part that it does this with any non-stock settings, that's certainly odd. Try doing a CMOS reset(something could have changed that you didnt realise) and if that doesn't work, might be worth updating the bios if a newer version is available.

 

 

Also 1.39 volts is still alright to run at with your cooling setup, anything over 1.4 is pushing it, and 1.45 would be the absolute maximum.

[TipsyDriver]

Okay, so I've asked some work colleagues and they say it could be the Mobo switching from the default profile to the OC version, I mean, I've been on my PC for a few hours and it did the off and on, it's at 5Ghz running at 1.320 volts and I've stressed tested it for like 30 minutes it's holding fine when gaming, I have absolutely no idea, I'll look into the CMOS reset. 

[TipsyDriver]

Also my motherboard is an Asus Maximus X Hero

[chckovsky]

I had this issue with my new 8350K + ROG STRIX Z370F. Newest BIOS. This would only happen after turning and leaving the PSU off for a while. I wrote down my OC settings from the BIOS, loaded optimized defaults in BIOS, restarted and tested. No weird restart. Reentered my OC settings - and now it's fine. It's weird though but strange to see other people with the same problem.

[partymarty]

9 hours ago, TipsyDriver said:

Also my motherboard is an Asus Maximus X Hero

I'm having the same mobo as you and it behaves exactly the same as yours. So I wouldn't worry too much.

 

Mine does the same thing: turning on for a second, turning off, turning on again and then boots to Windows.

[chckovsky]

2 hours ago, partymarty said:

I'm having the same mobo as you and it behaves exactly the same as yours. So I wouldn't worry too much.

 

Mine does the same thing: turning on for a second, turning off, turning on again and then boots to Windows.

But the thing is, for the POST code LEDs, the CPU light go on, THEN it turns off, possibly indicating a problem with the CPU.

[miagisan]

It also could be LLC doing its thing. My gigabyte board does that when I enable it on my AMD system. Been working perfectly fine for many years now, so I don't worry about it. 

[Egg-Roll]

5 hours ago, chckovsky said:

But the thing is, for the POST code LEDs, the CPU light go on, THEN it turns off, possibly indicating a problem with the CPU.

Nah, when I overclocked my P4 its motherboard did it all the time...

 

Now if it goes into a rebooting loop and doesn't reset to stock settings, that's something to worry about 

[TipsyDriver]

Okay, that's fine, so another question: I turned it on today and it started to boot to Windows then frooze? Switched off my CPU clock, left the memory clock on, is that to low of a voltage? Should I increase the LLC? Any ideas?

[TipsyDriver]

This is video I followed for 5Ghz 

Time stamp for Overclocking is 5:03, if anyone wants to watch that, can they tell me whether these settings are good or not right at all. He's running the same mobo and CPU as I am

[miagisan]

If windows freezes after the overclock is enabled, it's not a stable overclock. 

[miagisan]

Just now, TipsyDriver said:

This is video I followed for 5Ghz 

Time stamp for Overclocking is 5:03, if anyone wants to watch that, can they tell me whether these settings are good or not right at all. 

You have to remember, every overclock will not be identical, as the Silicon on each cpu varies from chip to chip. These videos are usually good for a baseline, and from there you start tweaking it. 

[TipsyDriver]

26 minutes ago, miagisan said:

If windows freezes after the overclock is enabled, it's not a stable overclock. 

Okay so, I left my machine off for like 15 minutes with this clock, switched it on, it didn't turn off and on again, it just stayed on (which surprised me) then the feed to my monitor went as soon as it got out of the BIOS, turned it off and back on again and it booted fine? Still unstable? Any settings that I should definitely tweak. I'm going to switch it off again and leave it for a little while and try again.

[TipsyDriver]

I think it's removing the settings, every time I boot back into the BIOS it says load previous values and then when I go to exit and restart it says about saving values I haven't actually modified in that instance. I've backed it down to 4.8Ghz with an AVX offset of 1 with a voltage of 1.330, going to restart it and see if it holds up.

[miagisan]

10 minutes ago, TipsyDriver said:

I think it's removing the settings, every time I boot back into the BIOS it says load previous values and then when I go to exit and restart it says about saving values I haven't actually modified in that instance. I've backed it down to 4.8Ghz with an AVX offset of 1 with a voltage of 1.330, going to restart it and see if it holds up.

It will reset the overclock if it's not stable. 

[TipsyDriver]

I think I'm just getting really bad luck, the only thing I can tweak without Windows freezing on Startup is changing the DRAM Frequency to it's advertised 3200Mhz, if I change the Core Clock up by 0.1 from 4.7 to 4.8 it won't boot unless I restart it after Windows freezes, I cannot even apply an XMP Memory Profile without it freezing (I tried applying this while the CPU is running stock). Am I just getting really bad luck here?