How to deal with dying P8Z77-v deluxe?

Gnobulix

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Apr 1, 2014
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4,510
Dear members of the MB community,
I bough an Asus P8Z77-v deluxe in February 2013 for my new system. It worked well for about 11 months with moderate overclocking (4.5 GHz, 1.31 V) and suddenly started to refuse to post with the overclocked settings. It would only post if I reset the CMOS using the button on the board while being fully functional once it booted (games, browsing, working, ...). At first, I was able to post with "optimized defaults" until this degraded and I couldn't even start the computer with optimized default settings. It now only posts reliably when I leave it on the very minimal settings present after the CMOS reset. I tried many version of the BIOS, the behavior is the same. I'm on 2104 now. This problem seems to have been encountered by many users.
While it functions normally under these minimal settings, I didn't buy this system and its premium board to stay with default settings. I asked Asus and then the supplier for an rma to which they've agreed. The issue is that this board is now at the end of its life (!!!!) and they don't know how much time it would take to replace it, what they would replace it with or if they would replace or refund (I have a 2-year warranty in Switzerland). In any case, this would leave me without access to my computer for an unknown number of days, which I find unacceptable. I was also surprised that a less than two years old board is already EOL.
I would like to keep the rest of my system as it is and minimize the number of days without a computer. My options seem to be:
- Disassemble the computer and send the board back, hoping to get something good in return at some point in the future. The Asus response is less than encouraging.
- Order a new board and make the swap in one day. This would defeat the purprose of the warranty and buying a premium product from a supposedly reliable manufacturer but at least I wouldn't have to wait.
Any suggestions? If I buy a new board, what should a buy?
thanks in advance for any help!

Here are my full system specs:
16 GB DDR3-RAM - 2400MHz - G.Skill TridentX Kit CL10
ASUS P8Z77-V Deluxe - Sockel 1155
Noctua NH-C14 - CPU-Cooler Multisockel - 12.6db(A)
Samsung SSD 840 Pro Series 256GB
CPU Intel Quad Core i5 3570K/3400
PSU Seasonic, X-Series, 1050W, 80+Gold
HD WD Caviar Green 3.5" 3TB
MSI N670GTX PE 2GD5/OC
Case: Silverstone SST-FT02S USB 3.0 Fortress - silver
 

Gnobulix

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Apr 1, 2014
3
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4,510
I have the latest drivers and BIOS. I was about to start testing with another PSU when I think I stumbled upon the problem: the optimized defaults don't seem to provide enough voltage to the CPU or RAM in the BIOS version I was using (2104).
I did two things: unistalled AI Suite II, and set the settings to X.M.P. It allowed the system to post normally for some unknown reason although the CPU voltage was super high in 0 offset mode. I had tried that earlier and it hadn't worked. Since then, I've been trying to identify overclocking settings that work. I'll do some Prime 95 runs this weekend to test for stability.
It seems this system is very finicky with the voltages. The slightest derivation from a certain range will not allow it to post.
P.S: Asus was wiling to reimburse me since they had no equivalent board in stock.

 

Gnobulix

Reputable
Apr 1, 2014
3
0
4,510
Case closed! My system is now stable at 4.4 GHz with voltages around 1.25 v in offset mode and max temps at 75C. Could probably overclock more but it will work for the moment.
Lesson learned: when you update your bios and return to default settings, it may be that the default settings won't work for your system.