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Asus Crosshair IV Formula Failing to POST

post #1 of 14
Thread Starter 
For the past month or so, I've been having this problem. A while ago, it got to the point I could no longer stand it, and had exhausted all of my ideas.
I'll get occasional freezes, usually about once per day. No bluescreen, no artifacting, just a straight lock-up. More recently, I've received random bluescreens as well, albeit only twice. Here's where the real problem that has me concerned: sometimes, my setup will fail to POST. Lights come on, fans spin up, etc, but that's all. When this happens, the POST status LED for the CPU comes on and stays lit, which, if it is to be trusted, says it is a CPU issue... However, before blindly following it, I'm wondering if anyone else has any firsthand experience with this, or advice as to determine what the underlying cause may be (I want to believe it's a power-supply issue, causing the CPU to not pass its POST inspection...but that's just...hoping, really). Further, on successful boots (usually after a failed POST, but not always), I'm given a message about a new CPU being found, and am prompted to enter the BIOS setup for it (where all values are both present and correct).
As a side-note, my system (in my signature) has been running at stock speeds/voltages for a while, even before this issue began occuring, so it's not due to a bad OC.

Things I've tried so far:
Updating BIOS
Updating drivers
Rolling back to older drivers
Running Memtest86+ for about 8 hours, no errors found
Leaving Prime95 running overnight, no errors
Removing any extra hardware (2nd and 3rd hard-drives)

Temperatures:
CPU: Ranges from 16C idle to 24C load (reported by CoreTemp,which I know tends to lowball temperatures, and needs an additional error correction value added, but I forget offhand, so I'm just posting the raw number)
GPU: Ranges from 33C idle to a max of 84C while running 3DMark 11 (reported by GPU-Z)

I've had these freezes occur while gaming, while only running a browser, IM client, and Skype, and while coming back from being idle while eating dinner. Further, the POST fails have happened both immediately following a freeze, as well as from a cold boot after being off for hours following a proper shutdown.

Any help would be much appreciated.
Edited by Chemykal - 6/17/11 at 4:19pm
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post #2 of 14
I couldn't tell you exactly, but I would try reposting your issue here. Chances are someone can help you.
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post #3 of 14
Is the heatsinks properly installed?
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post #4 of 14
Thread Starter 
Quote:
Originally Posted by PureOC Jim;13921356 
Is the heatsinks properly installed?

Yes, the heatsync is on properly and tightly. It runs fine for hours, even days at a time, and freezes at random occurances, with temperatures still well-within the safe range. It's not an issue of old, dried up paste either, as this build as a whole is only about 6 and a half months old.
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post #5 of 14
In a case like this as far as the LED coming on, I've only heard of two others. One turned out to be a cable extension used on the CPU power connection, while the other was a issue with the pins on the CPU being unknowingly bent due to a problem during installation. Not much to go on but might be worth looking at depending on your setup. Hope this is of some help.

As mentioned above you could click on the link in my sig to the Asus Crosshair IV Formula/Extreme Club where you'll find a real good group with many members where perhaps you'll get more responses.
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post #6 of 14
Thread Starter 
Quote:
Originally Posted by The Sandman;13924635 
In a case like this as far as the LED coming on, I've only heard of two others. One turned out to be a cable extension used on the CPU power connection, while the other was a issue with the pins on the CPU being unknowingly bent due to a problem during installation. Not much to go on but might be worth looking at depending on your setup. Hope this is of some help.

As mentioned above you could click on the link in my sig to the Asus Crosshair IV Formula/Extreme Club where you'll find a real good group with many members where perhaps you'll get more responses.

I've seen the bent pins issue on a few forums as well, however the fact that it went about 5 months with no issues before it started happening, and without ever removing the CPU, I kind of dismissed that idea.

Well, now that you mention it, I do have an extension cable on my CPU power connection. It was in use for a month or two before this started happening, but that's definitely something worth looking in to. In the case you knew of for that, was it just a bad connection/cable , or something else?
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post #7 of 14
Quote:
Originally Posted by Chemykal;13943720 
I've seen the bent pins issue on a few forums as well, however the fact that it went about 5 months with no issues before it started happening, and without ever removing the CPU, I kind of dismissed that idea.

Well, now that you mention it, I do have an extension cable on my CPU power connection. It was in use for a month or two before this started happening, but that's definitely something worth looking in to. In the case you knew of for that, was it just a bad connection/cable , or something else?

I believe the owner temporary did away with the extension and this is how he discovered his fix/cause.
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post #8 of 14
That would be me...but also try and increase the voltsa a bit on CPU CPU/NB and Memory and recheck.
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post #9 of 14
Thread Starter 
So, in the past 4 days or so, it's started exhibiting a new problem (twice, out of a handful of boots): After displaying the New CPU, F1 for Setup, F2 to continue screen, it's prompted me to insert a boot device. Going in to the BIOS, the boot order for my hard-drives had reset to default. This new symptom is making me lean towards a bad CMOS battery...thoughts?
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Big Red
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post #10 of 14
Quote:
Originally Posted by Chemykal;13966292 
So, in the past 4 days or so, it's started exhibiting a new problem (twice, out of a handful of boots): After displaying the New CPU, F1 for Setup, F2 to continue screen, it's prompted me to insert a boot device. Going in to the BIOS, the boot order for my hard-drives had reset to default. This new symptom is making me lean towards a bad CMOS battery...thoughts?

I would be inclined to agree.

Do you have a digital multimeter to test your CMOS battery's voltage? It should read ~ 3V. If it's significantly lower than ~2.5V, replace it.

Good luck. thumb.gif
    
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