After OC: No power up. Without CPU 4/8pin in the motherboard it powers up.

Thanks for all the replies! Here's a bit of an essay:


@alexoiu - I shall finally be heeding your advice and test it with a new CPU next

@Chugalug_ - I agree the 212 EVO isn't an extreme cooling solution, but it did keep the CPU at max. 55 under load, and idle in the high 20s...but as pointed out it was simply the crazy ass voltage that fried it in this case.

@L0stChild - For your curiosity, I had tried overclocking it a few years ago, with the max. reaching 3.6Ghz with stability (Which is pretty much just what the turbo core does) so I got the new GPU and wanted some extra room on the aging 3.6Ghz speed, and searched what the max. was that people had achieved with their 1090t, and obviously accepting 1.6v as normal was the error of no return...

@4Ryan6 - It did fry! I had been flicking through that text and it really did only show as white either way, it was obviously in the dangerous zone...haha! It is, as you say a great idea to rather use the max. design voltage as a guide as well. Even though I've done multiple successful overclocks before; Yes I did learn something from this!

@eightydee - I also got a new motherboard, and as discussed below, it ended up helping but not solving the issue. In this case it was over-volting the CPU..



I understand that 1.6v was way over what would be a good idea (understatement), I was really under the impression that it was a legit value to reach the 4Ghz+, as I had been reading in other threads (more than one).

The error was obviously rushing to the conclusion that it was an acceptable voltage to try.



Just for the sake of anyone reading and wondering what else I did; since then I've tested all other components with working ones, except for the CPU:

- PSU worked perfectly powering another PC.

- After seating a new motherboard, it boots but with random freezes requiring a forced restart OR completely turning off without warning. (This was in POST, BIOS and Windows). Sometimes going for 5 seconds, sometimes up to 15 minutes.

- I tried different RAM, just to rule out that possibility, with no difference to the symptoms above.

- I also tried multiple things like starting with bare minimum components attached to the motherboard, using another PSU entirely, removing one of the two 4-pin CPU plugs (Which strangely was the only time it reached to 15 mins before the freeze or power off) as well as multiple underclocks and other adjustments in the BIOS to try and coax out some stability. All have yielded no more stability.

- The last thing I'll be doing is to seat a new CPU. I'll probably be getting the FX 6300 because for a nice price, it fits nicely into the AM3+ socket on the ASRock Fatality 970 Performance board I got.



So in conclusion:

Read 4Ryan6's "Best solution" - Find the maximum design voltage rating from the manufacturer, not random internet people's experiences with their overclocks. You can obviously go over that, but do it SLOWLY and CAUTIOUSLY. Unless you have spare parts lying around and a fat wallet, then you can go crazy.

And as I have known all along (but felt too brave to do this time), since it's really the basics of overclocking: Start with small increments and lower settings and work your way up!

I replaced the motherboard and it started going on again, so the old motherboard was probably also damaged.
Now I have to replace the CPU as well because it still switches off and freezes randomly.

From your first post:
I would try resetting the CMOS if you haven't done that already before returning. If you have, you might have the same issue that I did with both Motherboard and CPU being damaged.
Although I can't promise that its the same issue since you said you did only a little bit of tweaking, and I tried to OC with 1.6v...which is a lot.

It seems my case was slightly different and my symptoms were slightly different. After the OC it didn't turn on at all, only flashed the LEDs and fans on for less than a second. It does look like in your case it is the motherboard, and it's unlikely that the CPU is also gone if you didn't do extra silly voltages like I did.

If its fairly easy for you to go test the CPU quickly, it wouldn't hurt to do so, just to rule out the possibility of it being damaged, otherwise I'd say its likely to be your motherboard.