Computer freezes in BIOS, but nowhere else.

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S3ZHUR

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Oct 10, 2014
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4,510
My system,

* i5-3570k
* gigabyte ga-z77x-ud3h
* 8gigs of DDR3, 1.65v, 1333mhz (stock)

After much hullabaloo I've figured out a stable OC of 4.1 - 4.5 (cpu multiplier to 4.1, turbos to 4.5, 4.5, 4.4 & 4.3) at a fixed voltage of 1.13. Other setting adjustments include turning off C3/C6 and changing LLC to lvl 2. Following this success I wanted to try using offset voltage and after much head scratching arrived at a seemingly stable offset voltage of -0.065. Now as it turns out it's not quite stable (some WHEA errors and a failed prime95 balanced run at about one hour in), but right now this doesn't quite concern me. What does bother me is the inability to load up my BIOS. Like the title says, trying to enter my BIOS results in a freeze, but at no other time does this occur. I've tried turning off all C-states but this came to no avail. The only time I've been able to go into my BIOS while using offset is with voltages that are way to high; +0.05 and above. Even low positive voltages result in freezing.
Anyone have a clue as to what's going on here?
 
Solution
A
I know that the VRIN refers to the voltage going to the motherboard's VRM. The VRM is a way of scaling back the potential (voltage) on the processor from say 5V to 3ishV to prevent from frying it. VCCIN refers to a feature on the processor, that I believe holds a similar function but performs it in a different way. I have seen those features with a Haswell based processor. The i5-3570k I believe is Ivy Bridge. Have you tried perusing this article:
http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end
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akagordon

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Apr 5, 2009
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I have never seen this before, but I have used Gigabyte's Ultradurable boards for my personal builds for years. I noticed that the ga-z77x-ud3h has a new feature called "3D BIOS" that provides two different graphical interfaces. My current MoBo does not have that, but it may be worth looking through the user manual or contacting customer support to see if this is a problem related to the new technology instead of overclocking or a combination of both.

I wouldn't normally recommended flashing a BIOS as the first step in a solution, but you could hook the PC to a UPS and give that a try. I assume you know the dangers of flashing a BIOS, but with the Gigabyte dual BIOS I have never had a problem.
 
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S3ZHUR

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Oct 10, 2014
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Thanks for responding.
Yeah, this is a pretty weird one, searching around online has proved quite fruitless.

The 3D BIOS you mention is just a gimmick that allows for a slightly prettier looking BIOS page that attempts to gather together the settings an overclocker might need. While I can't be sure that it's benign it would seem unlikely that it's the cause of the issue.
As for flashing the BIOS; I have the latest update that is not in beta, namely f18. Furthermore the beta updates make no mention of anything related to overclocking in their change logs, just support for a secure boot function and updated audio.

Two more things are perhaps worth mentioning though.
Firstly, I bumped into a post from some years back by a chap that was having the exact same problem I was having - he gave up and simply used fixed voltage in the end. If I had to choose between that and having to reset CMOS on the rare occasions that I'll need to get into my BIOS I'll take the latter.
Secondly, in another identical post to this one (I've cast my net wide) a chap responded with suggestions about VCCIN and VRIN. Neither of these settings appear on my board and some lite googling has revealed little information on them; do you know anything about these settings?

EDIT: To summarize my understanding of this - My cpu has an unusually high VID which forces me to set an unusually low DVID. This becomes a problem when loading into the BIOS as the BIOS (presumably) is the lowest voltage state your computer could be in and the combination of the two tips it over the edge.
 
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akagordon

Distinguished
Apr 5, 2009
2
0
18,520
I know that the VRIN refers to the voltage going to the motherboard's VRM. The VRM is a way of scaling back the potential (voltage) on the processor from say 5V to 3ishV to prevent from frying it. VCCIN refers to a feature on the processor, that I believe holds a similar function but performs it in a different way. I have seen those features with a Haswell based processor. The i5-3570k I believe is Ivy Bridge. Have you tried perusing this article:
http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end
 
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