Boxaaz11
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hi I have been having this problem for a while now never use to happen before, I was wondering if anyone could shed some light on this.
when ever I turn my pc on it goes in to C state code and nothing happen. if I open my case and click the (red JCMOS) button it will restart and automatically boot up fine.
my specs are below:
evga x79 dark mobo
i7 3930k stock settings
corsair h100i cooler
16 gb ddr3 hyper x Kingston predator 1866mhz
intel 520 ssd + every other sata port filled with hdds
gtx 980
windows 8.1 on ssd
any help would be greatly appreciated.
many thanks
Asif Akhtar
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bdary
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/05/28 08:25:48
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It sounds like you may have a (possible) corrupted BIOS. Have you tried booting from a different BIOS chip? I'm sure you're aware there are 3 to select from.
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/05/28 08:51:35
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Hi thank you for the reply i have tried with diffrent bios but same i have just given my pc a clean removed all ram and graphics cards cleaned it all out reseated the cpu im going to plug it back up and see if it makes a diffrence not sure if it will to be honist but ill give it a shot, and any chance you could tell me a way of updating the bios ? I have updated them before but not sure if i done it correctly i did through ms dos usb flash drive ?
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bdary
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/05/28 09:37:17
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Follow this link to get the latest BIOS file for the X79 Dark. Revision 2.13. >> http://forums.evga.com/X79-BIOS-updates-m2238203.aspx I find using the Windows method quite simple and have used it for flashing every BIOS revision since the board was released. EVGA has written a brief instruction on how to do a "Windows Flash" and is included in this link. You can follow any other form of flashing if you prefer. There are USB instructions included as well.
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rjohnson11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/05/28 09:47:26
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Let us know if this works for you.
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MhzManiac
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/05/29 22:42:44
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I usually leave #3 bios position at stock just in case.
Put a usb stick in and boot up into bios. Then take screen shots of the main bios page and the mem page using F12 key. They will be bmp format on the usb drive, so convert them to jpeg and post them here.
Maybe there is something in auto settings that should be set manually.
That is me in the picture, anyone else ever pet a live Lion?EVGA Z390 FTW (Bios 1.08) i9-9900KF 8 core, 32G Corsair Vengeance LPX Dual Chl 3000 XMP-1 , Intel SSD6 M.2 2TB, Samsung 840 PRO 1TB / 512G SSD, Gigabyte RTX 2080 Super , Win 11 Pro 64, EVGA Supernova 1300 watts, NZXT Phantom 820, Strix Raid DLX 7.1 surround, Corsair H100 Liquid , Dell S2417DG /S2409W / Acer XB241H Predator / Samsung C24F390 Curve/ Oculus Rift S VR
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/02 15:00:59
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hi all sorry I have not replied I have been away out of town just got home, I am now going to try flashing the bios and see if that makes a difference thank you for the advice, I will also upload a picture of the bios page if that helps, thanks.
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/02 15:17:00
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I have uploaded the screenshots of my bios page as u asked me :D
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bcavnaugh
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/02 15:37:38
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I would recommend that update your Bios to 2.13 as bdary stated above. 2.04 is very old. As a low I would not go below 2.11 Bios but if you can get into your Bios as you show above update it to 2.13. For me it has been rock solid under Bios 2.13. This is your Memory http://www.kingston.com/us/hyperx/memory/dual_channel? With this memory have you selected XMP Profile 1 in the Bios?
post edited by bcavnaugh - 2015/06/02 15:52:42
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/02 16:31:07
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that is my ram below and I normally use profile 1 on xmp but lately I have been keeping everything at stock and I have been having Cstate problem, I am going to flash now and c how it goes
Predator - 16GB Kit* (2x8GB)- DDR3 1866MHz CL10 Intel XMP DIMM
PartNumber:KHX18C10T2K2/16X
Specs:DDR3, 1866MHz, CL10, 1.5V, Unbuffered,
Profile 1: 1866MHz, 10-11-10, 1.5V
Profile 2: 1600MHz, 9-9-9, 1.5V
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/02 17:12:05
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ok I have now flashed my first bios switch to the latest version, it seems to be all working fine but u will find out in the morning when I wake up as sometimes the computer will work fine if I use it time to time but if it is off for maybe about a hour or more then it goes in to C state that is what I noticed before but I will see what happens since I have flashed.
thank you everyone :D
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/02 17:21:44
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ok everyone a quick update I turned my computer off and left it for about 5 minutes I come back turned it on and I was stuck in C state again I have updated successfully to the latest bios version as well any ideas?
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bcavnaugh
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/02 18:24:01
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How is your Battery on the MB? You did also check for Bent CPU Pins in the CPU Socket yes? Also what it the Make and Model of your Power Supply and AGE? Is your Motherboard with or without Bluetooth?
post edited by bcavnaugh - 2015/06/02 18:39:10
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 03:59:08
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Hi i highly dout my cpu pins would be bent as i have not taken my cpu out since setting it and i have never had a problem with this, i have the evga x79 dark motherboard which has bluetooth installed on the motherboard and my psu is:
High power 1000W 80plus certified
I have just got a new battery for the motherboard but once i turn the pc on it stays on for 5 seconds reboots and then turns off completly in bios 1 which i flashed very strange ?
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bdary
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 07:34:08
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Do you have your GPU installed in the primary slot? The top PCIe slot closest to the CPU socket. It doesn't look like it in your pics. If not, try it there just to verify if it makes any difference or not.
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 07:37:32
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hi I have finaly got the 1st bios working now but same old C state code and I have my gpu installed in the 3rd pcie slot because it wont fit in the first due to the evga dark cover I don't want to force it in and damage my gpu I have disabled all the other pcie slots apart from the 3rd, I can try first now and let you know the difference but iv always used the 3rd slot and worked fine
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bdary
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 07:54:10
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Boxaaz11
hi I have finaly got the 1st bios working now but same old C state code and I have my gpu installed in the 3rd pcie slot because it wont fit in the first due to the evga dark cover I don't want to force it in and damage my gpu I have disabled all the other pcie slots apart from the 3rd, I can try first now and let you know the difference but iv always used the 3rd slot and worked fine
At least for testing things out and trying to get you up and running, move the GPU to the primary slot and enable " ALL" PCIe slots for now. The GPU should fit in slot 1 even with the I/O cover. There are many of us with the Dark board using slot 1 with no problem. It's a close fit, but does fit. Let us know how it goes...
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 08:21:10
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Ok so i have installed the gpu in the first slot it seems to work fine i am gym inabit so i will find out when i am back and turn it on to see if i am still greated with the C code error
Thank you for your help
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bcavnaugh
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 08:26:58
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I have three Titans install on my X79 Dark and have the I/O Shield install and my Titans have back plates installed. Set your Bios to GEN 3, it shows under your older bios images a Gen 1 Release your CPU Cooler Mounting Screws back one half turn on all fore screws.
post edited by bcavnaugh - 2015/06/03 08:28:59
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 09:13:21
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I have turned my bios to gen3 but it still shows as 1.0 on the main bios page don't think that has helped and I stil get the C state code
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bcavnaugh
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 11:26:12
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Boxaaz11
I have turned my bios to gen3 but it still shows as 1.0 on the main bios page don't think that has helped and I stil get the C state code
What about "Release your CPU Cooler Mounting Screws back one half turn on all fore screws."
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bdary
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 11:28:48
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I don't suppose you could get your hands on another 2011 (SB-e/IB-e) CPU? Or a different X79 board to test your current CPU on?
Can you still boot up fine (to Windows) by pressing the reset CMOS button on the board as you stated in your 1st post?
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 12:26:18
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I can boot fine to windows soon as I press reset cmos the cpu works fine I have stress tested it for hours it works perfectly fine no errors its working totally fine I have just reset the cpu in the socket and applied the thermal paste it booted up without C state but will find out soon when I keep it shut down for a while and try restarting it.
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bdary
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 15:11:24
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Sounds good. Keep us posted... 
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/03 15:14:44
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ok so before I went out I set all my settings inside bios and turned my pc off I come back and same thing greeted with a C state code, ps all I did was make my ssd first boot tht is all, I don't no why I got a funny feeling it could be to do with my usb 3.0 wires that are plugged in, in the past it has turned my pc off could that be maybe something to do with it ? u don't no sori if I sound daft. im on my pc using it right now but only due to reset cmos really weird :S
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bdary
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/04 13:45:10
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What happens if you remove those USB 3.0 wires? That would be easy enough to determine if it's the cause or not.
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Boxaaz11
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/09 08:58:45
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hi everyone sorry I have been away for a while, just a quick update: I give up lol I have tried everything the motherboard has a mind of its own sometimes its posting fine sometimes it has a C state error code so I just give up with it now, I don't mind pressing the reset cmost button inside it works totally fine once it boots up with out any problems so its fine, right now it seems to boot fine and other times greats me with the code but I aint fussed now, thank you everyone for your help and information.
many thanks
Asif Akhtar
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bdary
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/09 09:22:49
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The only other thing I can think of you may want to double check is that your wires from the case front panel I/O (power, reset, etc.) are connected properly to the header on the motherboard. Positive side to positive, negative to negative where it applies. No connectors unplugged at the header as well. Stuff like that. May be a long shot, but worth a look.
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budbud
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/06/19 03:46:56
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I've RMA my board 3 this me because of this same issue, nothing works, tried doing everything listed in this thread many many times, bought new CPU, gpu , ram and PSU, tried liquid/ fan_heatsink cooling, NOTHING fixes this issue. EVGA doesn't care to look into it either
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Blue PiK
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Re: EVGA X79 DARK MOBO C STATE CODE ?
2015/08/13 14:14:23
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Hi. I also showed up today, state code "C" nothing works. You can not perform a reset or turn off the computer even buttons on the motherboard. Have you any idea
post edited by Blue PiK - 2015/08/13 14:19:51
X79 DARK, (BIOS 2.11) Xeon E5 1650 V2 EK-SupremeHF, Vector 2x128 Raid0, GTX 780 Classified, Team Group Xtreem-LV 16GB 2600MHz, Corsair AX1200,  
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