Random system crashes

JAPears · 30 Jul 2011 at 22:29

I overclocked my i7 950 yesterday to 4ghz, using 1.3vcore and 1.315 vtt, and everything seems stable in prime 95 (running for 1.5 hours) even if the temps do get a little hot (80C)
but today ive been getting random crashes, not a BSOD, but the screen goes black and random bright colours that look torn flash up at the top of the screen, and it reboots.. anyone know what might be causing this?

JAPears · 30 Jul 2011 at 23:13

Ive increased the vcore and vtt up by one notch on each, and again, so far it seems stable running on prime, no idea why the crashes are happening, they've been when just web browsing, and when not stressing the system at all

Subliminal Aura · 30 Jul 2011 at 23:23

6-12 hours prime95 please .... No mickey mouse 1.5 hour runs please

SeraphX · 30 Jul 2011 at 23:34

run prime with your system on stock settings, see if it crashes, ^^ 6 hours at least ideally, if it's fine, chances are your settings need tweaking

JAPears · 30 Jul 2011 at 23:40

Subliminal Aura said:
6-12 hours prime95 please .... No mickey mouse 1.5 hour runs please

with the new voltages and my current cpu cooler, after an hour and a half run of prime im at 84C max temps, can i really run it for 6 hours safely at these temps?

Subliminal Aura · 30 Jul 2011 at 23:47

JAPears said:
with the new voltages and my current cpu cooler, after an hour and a half run of prime im at 84C max temps, can i really run it for 6 hours safely at these temps?

There you go... problems already.

I seriously can't remember the last time I had a lockup or reboot but seemed to have them when I was an overclocking noob many years ago.

Once you get the overclock rock solid you'll never have that fear in the back of your mind that maybe the PC will crash on me. I suggest you start with this ....

Seraph said:
run prime with your system on stock settings, see if it crashes, ^^ 6 hours at least ideally, if it's fine, chances are your settings need tweaking

If it's still too hot - sort out the cooling in you PC before attempting to OC

JAPears · 30 Jul 2011 at 23:54

Subliminal Aura said:
There you go... problems already.

I seriously can't remember the last time I had a lockup or reboot but seemed to have them when I was an overclocking noob many years ago.

Once you get the overclock rock solid you'll never have that fear in the back of your mind that maybe the PC will crash on me. I suggest you start with this ....

If it's still too hot - sort out the cooling in you PC before attempting to OC

things have annoyed me so much over the past couple of days, that im litterally have a new sandybridge build in the ocuk basket ready to buy heh.

And cooling in my system shouldnt be a problem at all, atleast for 4ghz

SeraphX · 31 Jul 2011 at 09:32

what cooler are you using?

JAPears · 31 Jul 2011 at 09:40

Akassa Nero s

JAPears · 31 Jul 2011 at 20:13

this is still happening, ran prime 95 for 5 hours today without a crash, then randomly crashed with a black screen and random strip of colours at the top and bottom whilst just browsing youtube?
whats going on..

Subliminal Aura · 31 Jul 2011 at 20:15

What are your temperatures like ?

Also what PSU have you got ? It may be on its last legs

JAPears · 31 Jul 2011 at 20:20

850W coolermaster silent pro... only had it like 9 months, temps are high on prime, but seemed stable 85C with a i7 950

hibernian1875 · 31 Jul 2011 at 20:20

Have you set it back to stock yet like suggested above several times to see if it's the hardware or a bad overclock?

Subliminal Aura · 31 Jul 2011 at 20:26

Temps are too hot... As I've said above, sort your cooling out mate before even thinking about overclocking.

Your CPU should have an idle temp of 40C with decent case cooling

dfarrall · 31 Jul 2011 at 20:29

As above, set to stock and see if it still happens, i'd be thinking video card if it is.

Subliminal Aura · 31 Jul 2011 at 20:46

85C on stock is not acceptable or have I missed something ?

hibernian1875 · 31 Jul 2011 at 20:48

Subliminal Aura said:
85C on stock is not acceptable or have I missed something ?

I think the 85C is with his 4GHz OC, don't think he's tried stock yet from what he's posted.

dfarrall · 31 Jul 2011 at 20:50

Subliminal Aura said:
85C on stock is not acceptable or have I missed something ?

Not sure were you got that from, but it was 80C on his first overclock then 85C on his next one were he thought it was more stable. No mention of stock temps as he hasnt set it to stock yet.

Subliminal Aura · 31 Jul 2011 at 20:57

OK well I had assumed he would have gone to stock by now, it's what anyone with at least one brain cell would have done.

I'm out of this thread.

JAPears · 31 Jul 2011 at 21:22

It's been stable at stock since October so it's just the overclock that's the issue I think, though it's stable through prime on 5 hour run of small ftt's