Well my i7 seems fine can run toture tests on it for hours at 3.8 ghz never crashes but sometimes when i turn it on it fails to boot then i have to go to the bios and save the settings and normally it boots fine afterwards. What might be causing the machine not to spin up and then report a failed overclock ?
Strange boot issues with 920 i7
- Thread starter ratters
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you don't say what your set up is , but I saw this issue on my set up (EG58-UD5 with i7 920 12GB RAM).
Initally I was struggling to get past 3.0GHZ, I'd set the machine to 3.2 and probably like you, managed to get some stress software to run, all appeared ok, until I rebooted , where the board would report a bad overclock and reset back to something a bit safer.
Since then and with the help of otehr on these forums, I managed to get to 3.8.
I don't calim to be an expert on this but Id' guess (and its probably an obviosu thing to say) is that the settings you have are obviosuly not quite right. Something needs to change but I wouldn't know what it might be.Perhaps voltages?
If you post you settings here with your hardware, I'm sure someone wil be able to help - it may be that one setting is not quite right even if it apepars to work most of the time.
Initally I was struggling to get past 3.0GHZ, I'd set the machine to 3.2 and probably like you, managed to get some stress software to run, all appeared ok, until I rebooted , where the board would report a bad overclock and reset back to something a bit safer.
Since then and with the help of otehr on these forums, I managed to get to 3.8.
I don't calim to be an expert on this but Id' guess (and its probably an obviosu thing to say) is that the settings you have are obviosuly not quite right. Something needs to change but I wouldn't know what it might be.Perhaps voltages?
If you post you settings here with your hardware, I'm sure someone wil be able to help - it may be that one setting is not quite right even if it apepars to work most of the time.
I have the that board as well, and it can sometimes be a bit fickle.
Currently running mine at 3.9, and it seems stable. However very occasionally it will boot into the bios claiming a bad overclock, but I just reboot and it boots up like normal and works fine.
Yesterday I was playing Borderlands for most of the day no problems, this morning I booted up and up pops the bios message about a bad overclocker, reboot and its fine.
These boards also seem to have a bit of a cold boot issue, which been discussed quite a bit.
Currently running mine at 3.9, and it seems stable. However very occasionally it will boot into the bios claiming a bad overclock, but I just reboot and it boots up like normal and works fine.
Yesterday I was playing Borderlands for most of the day no problems, this morning I booted up and up pops the bios message about a bad overclocker, reboot and its fine.
These boards also seem to have a bit of a cold boot issue, which been discussed quite a bit.
The cold boot issues on the EX58-UD5 boards has now been resolved in the F9L beta bios which I have been testing and confirm works.
I think the issues were supposed to resolved in earlier bios versions too 
Although the last time I looked (a couple of weeks ago) F9k was the one to use, now they are up to F9m
As long as my PC works atm, I think I'll stick with F9k until some of the later ones are proven to be stable. Wouldn't be the first time a bios was removed due to causing issues with the UD5.
Although the last time I looked (a couple of weeks ago) F9k was the one to use, now they are up to F9m
As long as my PC works atm, I think I'll stick with F9k until some of the later ones are proven to be stable. Wouldn't be the first time a bios was removed due to causing issues with the UD5.
I had the same issue with the UD5 plus the board was causing a problem which would'nt let the computer sleep and also when i shut the machine down it would fire it's self right back up again which was annoying. Tried everything got sick and tired of it in the end and got a Rampage II instead and hav'nt looked back.
Mine goes to sleep fine, its waking back up it has a problem with
Haven't had the restart after shutdown problem yet though.
This sometimes happens with my system also, i have the Asus P6T Deluxe/i7 940/ 12Gb G.SKILL P.I/ and a 4870X2. Its caused by the graphic card failing to initialize.I then get the O/C failed message. As far as i know its a common problem with the MoBo when using a 4870X2. I have recently gone Quadfire with another 4870X2 & so far (touch wood ) its been booting-up fine. 
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i get the cold boot problem on my evga classified so it not the boards maybe a chipset related problem across all the boards or even becuase of the 12gb thing i dont know...
but i only get it sometimes and when the system is being turned on at the case as i havent had any of the other problems some of you others are getting as my overclocks are stable and cool as anything @3.8 1600 using the 19x201 method for lower power and lower heat on the strap.
(i mean it does 4.0 but it gave me only 400 points extra in vantage P scores and downers
loads more heat)
i had a gigabyte x58 extreme before this one and on that i managed to stop the booting problems with a bios upgrade...maybe i just got lucky
so to sum it up its one of the following
..
the gpu not pwoering up fast enough.
the x58 chipset
memory controller
but i only get it sometimes and when the system is being turned on at the case as i havent had any of the other problems some of you others are getting as my overclocks are stable and cool as anything @3.8 1600 using the 19x201 method for lower power and lower heat on the strap.
(i mean it does 4.0 but it gave me only 400 points extra in vantage P scores and downers
loads more heat)i had a gigabyte x58 extreme before this one and on that i managed to stop the booting problems with a bios upgrade...maybe i just got lucky
so to sum it up its one of the following
..the gpu not pwoering up fast enough.
the x58 chipset
memory controller
I had this issue for a while, it started happening straight after I installed Win7 for the first time, however, I powered down, removed the CMOS battery, closed the Clear CMOS jumper, and left the board sitting for 30 minutes like that, then I removed the jumper, put the battery back in, and voila, problem solved!!
I used to get the double booting issue to, however, that was on F7 BIOS, it hasn't happened since I updated the BIOS to F9e.