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Gigabyte P67/Z68 boot cycling problem - Page 56

post #551 of 811
It hasn't fixed the cold boot issue frown.giffrown.gif, I was on the computer for ages yesterday playing C&C3 red alert and Battlefield 3. Yet to test it out I switched the computer on after having it turned off over night and it just kept on powering off just before or just at the bios logo screen. Took the psu power cable out, left it for about 2mins plugged it back in and system started up perfectly into windows. This is NOT a PSU issue as this affects alot of people as per other peoples issues. It is a Gigabyte P67/Z68 issue


Also I've done everything you've described i'd agree with you it could be a bad board issue but there are too many people with this problem with different boards, gigabyte need to fix this asap!
Edited by Neil79 - 12/21/11 at 8:01am
post #552 of 811
Have you upgraded also Backup BIOS as described by Falkentyne in the previous post? As far as I know it is kind of must for this problem.
If yes then try F7A bios

I have found at HWBOT forum that gigabyte made fixes for this problem for a few models definitely
Edited by NEO1 - 12/23/11 at 7:46am
post #553 of 811
F7b is newer than f7a. Pretty sure he's tried that already.
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post #554 of 811
I had this boot loop problem as well.

I have the Z68X-UD4 with a gigabyte 6870. At first I had 2 x benq bl2400 monitor connected using mini dp to dp. I have been experiencing the boot loop problem but when I switched it to dvi and hdmi to dvi on my second monitor I haven't seen or suffered the boot loop since (on any bios version, its in F7 right now though). Now with a third monitor coming or planning to add I will be having the same problem as before redface.gif
post #555 of 811
I have been having a boot loop problem with my new i-7-3960x build. The system worked fine for a couple a weeks before the boot loop started. I started this thread, but haven't had any replies:

http://www.overclock.net/t/1185041/boot-loop-with-intel-x79si-mb-and-i7-3960x#post_15952815

I have switched out the four 8GB dimms I have to four 2GB dimms and while it seems to have solved the boot loop problem, I still get random BSOD's, so I am not sure if the problem is completely solved.
post #556 of 811
Hi All - great thread - invaluable discussion and ideas. Have spent the last week wrestling with this problem on GA-Z68XP-UD3R (v1.3 - latest as far as I know); i7 2700k; GTS450 graphics; G-Skill 2133 8Gb - 6 internal drives and a bucket load of USB stuff attached - including external USB drives.

From my brief journey there is no black and white answer - there are multiple factors that contribute to this. It would appear to be a mobo problem, but influenced by a lot of external things that drive some of the symptoms (and I can't admit to having read every line of this thread if I go over other stuff).
  • It is certainly power related. It is much worse on my machine with my Seasonic 400W power supply than Antec 750W (both use 8p to mobo and 6p to PCIE on graphics). Quite replicable - if I leave the 750 PSU in place and plug it into my old UPS that struggles beyond 400W boot loop comes back.more frequently. Machine will run fine on 400W once running.
  • It is also made worse in my case by: a) Putting more load on the external graphics card (so using both HDMI and DVI) rather than using DVI on external and HDMI on mobo; and b) Leaving legacy USB storage detect On (this has more impact than plug / unplug what appears to be the offending 1TB legacy USB drive - but both have an impact). I haven't tried disabling CPU PLL OverVoltage.
  • I also get a subtler version of what appears to be a related problem - if I do a Restart from within windows under semi-unfavourable conditions (lower PSU, more graphics load) the POST runs slow, doesn't show it found processor, and then boot stops after announcing 'Starting Windows' and before the logo shows. Again, needs power off at PSU and then restarts fine.
  • In terms of the latest beta BIOS (6b in this mobo case) - I didn't see any change in boot loop - but I got new warnings. Here is what I saw (I am sure only a little piece of what is actually happening!): a) If I create favourable conditions for booting (high power, low load) everything runs fine - with memory at 2,133 under XMP; but b) If I create unfavourable conditions and cause the subtler version of boot loop - the new BIOS shows a big new warning blaming conflicts in BIOS settings - which goes away if I turn off XMP for memory - then it just stalls on load as before.
  • Note need to be careful with @BIOS - it only found BIOS updates for rev1.0 board - which caused me to go seriously hunting to verify I had v1.3, which I did. Downloaded correct BIOS from Gigabyte site and @BIOS loaded it fine (for both 5 and 6b)

Anyway - while it appears to be a mobo problem, it is certainly made better and/or worse by quality of power and load applied around that critical boot period.

Gibbo
Edited by gibbo9000 - 12/28/11 at 6:58pm
post #557 of 811
I too was having this infinite post loop problem on my motherboard. What I finally realized, is when applying the xmp profile in the MB settings it says that the mem controller voltage goes up too, but after going into the voltage settings page and actually looking at the mem controller voltage the higher voltage is never applied . I manually set this to the xmp specified voltage and problem went away. no more post loop, no more random idle bsod.
    
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post #558 of 811
Quote:
Originally Posted by midad04 View Post

I too was having this infinite post loop problem on my motherboard. What I finally realized, is when applying the xmp profile in the MB settings it says that the mem controller voltage goes up too, but after going into the voltage settings page and actually looking at the mem controller voltage the higher voltage is never applied . I manually set this to the xmp specified voltage and problem went away. no more post loop, no more random idle bsod.

Good suggestion - I know the problem is memory related, so hopefully your solution works for me as well.
post #559 of 811
Quote:
Originally Posted by midad04 View Post

I too was having this infinite post loop problem on my motherboard. What I finally realized, is when applying the xmp profile in the MB settings it says that the mem controller voltage goes up too, but after going into the voltage settings page and actually looking at the mem controller voltage the higher voltage is never applied . I manually set this to the xmp specified voltage and problem went away. no more post loop, no more random idle bsod.

Problem is with this is that the xmp Kingston Grey 8GB specified volts are 1.65v and 1.2V for VTT/QPI which are very high for sandibridge, 1.55-1.60v main memory voltage is the norm but the VTT/QPI i'm unsure of
Edited by Neil79 - 1/1/12 at 6:05pm
post #560 of 811
Quote:
Originally Posted by midad04 View Post

I too was having this infinite post loop problem on my motherboard. What I finally realized, is when applying the xmp profile in the MB settings it says that the mem controller voltage goes up too, but after going into the voltage settings page and actually looking at the mem controller voltage the higher voltage is never applied . I manually set this to the xmp specified voltage and problem went away. no more post loop, no more random idle bsod.

The VTT/QPI voltage is a problem as you said, when set to auto it should use the voltages for the memory profile. However it doesn't and stays on about 1.050v or just over which is far to low. The kingston needs atleast 1.2v VTT/QPI, where'as the main volts still need to be set to your memory which I did anyway.

So look at your profile voltages for VTT and set them correctly not auto, usually it's about 1.2v vtt/qpi, i've set to 1.190v because it over volts slightly to 1.220v.

Will test the cold boot issue and see if it's fixed smile.gif, nice find anyway
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