Overclocked systems restarts before booting

slipd · 3 Aug 2013 at 11:34

Hi guys,

I recently had a bit of bother with my bios and had to reconfigure my overclock from the ground up and now, with what I thought were the same settings as before, I get a failed boot about 1 in 4

I press the power button and the power comes on, fan noise etc. but no monitor output and then the power drops out only to come back seconds later with a successful boot.

I've had this before with a different setup but in the same case, antec p182, but I don't think its case specific? I fixed the issue last time by upping a bios voltage (not the vcore) by about 0.2v but I can't remember which one it was

Any ideas?

Nickolp1974 · 3 Aug 2013 at 11:42

Firstly i'd save your oc profile then load defaults and see if the problem persists.
2nd memtest your ram.
3rd load your oc profile and give your vcore a small voltage bump.

Hakanese · 3 Aug 2013 at 11:44

What are your vcore, vtt, pll, and dram voltages at?
I think you may get more help if you post some of those numbers up

slipd · 3 Aug 2013 at 18:06

I just upped the PCH (?) from 1.0500v to 1.1000v - it was something like that that last time sorted it...

My vcore is 1.325v, RAM is 1.5v - I'll check out the other values later

slipd · 17 Aug 2013 at 13:17

^^ Anything drastically amiss there? I keep upping the vcore, bit by bit, but I don't really want to go much higher

wazza300 · 17 Aug 2013 at 14:37

does that memory support x.m.p in the bios? if so use that and profile 1 to setup your memory

vccsa and vccio should be fine on stock/auto,maybe set 1.55v dram instead

can look at this guide for 4.5ghz on asus boards,maybe try with +0.015v or +0.020v offset

http://forums.tweaktown.com/asus/47510-asus-z68-v-pro-4-5ghz-bios-screenshots.html?highlight=

guide will work on p67,they are all the same,i never touch cpu/pll either only on higher overclocks

slipd · 17 Aug 2013 at 15:18

Thanks mate!

Will those settings not make the chip run at 100% all of the time though?

wazza300 · 17 Aug 2013 at 15:38

not in the guide I posted

is your cpu running full speed atm? should be with fixed voltage

slipd · 17 Aug 2013 at 15:58

Yes, sorry, my mistake! No speedstep appears to be working fine with your settings

Just gave my machine 40 minutes or so of prime and it was fine. Haven't seen my chip run this coll for ages... cheers!

wazza300 · 17 Aug 2013 at 16:16

has it stopped the rebooting at startup?

slipd · 17 Aug 2013 at 16:29

I'll know tomorrow mate, when I boot from cold

wazza300 · 17 Aug 2013 at 16:33

it might do it once from cold,which is normal but shouldn't do it again once warm

usually a touch more dram voltage cures it

slipd · 19 Aug 2013 at 23:05

wazza300 said:
it might do it once from cold,which is normal but shouldn't do it again once warm

usually a touch more dram voltage cures it

2 days later and your settings are working sweet mate, thanks!

Much lower temps too, so happy all round

wazza300 · 20 Aug 2013 at 00:11

Ahh that's good,happy to help

Confused · 20 Aug 2013 at 11:21

A few of mine have done this when the mains power is fully disconnected.