Intel DX79TO with 3930K not posting/No display.

Dantek3 · Nov 29, 2015

Motherboard - Intel DX79TO Motherboard - (http://www.intel.com/p/en_US/support/highlights/dsktpboards/db-dx79to[1] )

CPU - Intel i7-3930K @ 3.30GHZ - (http://ark.intel.com/products/63697/Intel-Core-i7-3930K-Processor-12M-Cache-up-to-3_80-GHz[2] )

Graphics Card - EVGA 980TI 6GB (https://www.evga.com/Products/Product.aspx?pn=06G-P4-4992-KR[3] )

RAM - 4x2GB Corsair 1333GHZ DDR3

PSU - Corsair CX750M 750W (http://www.maplin.co.uk/p/corsair-cx750m-750w-atx-80-bronze-pc-power-supply-n35nu[4] )

Hey guys, wondering if you could help.

I recently acquired an Intel 3930k as well as an unused Intel DX79TO boxed Motherboard. I've heard there are problems with the bios when using some of the other CPUs from the LGA2011 range but that the 3930k (with the min.bios version needed is 280) shouldn't have any issues.
Unfortunately I cannot seem to get any display what so ever once I've set it all up, because I can't get a display, I can't see if I'm even able to update the bios, and thus stuck unable to do anything. The BIOS message display at the bottom says 00, which apparently means it's ready to work.
Here are a list of the things I have tried before asking you guys for help.

- Reseated every stick of RAM. Used all 4 different RAM in all the slots, used 1 stick of RAM at a time in all slots.
- Removed everything from the board except one stick of ram, the GFX card, the CPU and the PSU.
- Removed GFX/RAM/PSU and tried on old Motherboard to see if I had shorted/damaged any during the move.
- Reset the CMOS by removing the battery.
- Removed all USB connected.
- Reseated CPU and Heatsink.
- Reseated Motherboard.
- Tried 3 different monitors using both HDMI and DVI.

I've tried all I can think and am actually quite frustrated with it. I've been running an old Gigabyte MB with my trusty 1100T Black Edition AMD without hassle with a 7990, 770, 970 and now the 980TI, the second I use the new MB/CPU, I can't even get a display. The DX79TO has no onboard VGA output so it tells me to run it through my GFX card, so could the fact it's a 980 complicate anything? Everywhere I've read online that has had a similar issue with being unable to post says it's a bios issue but without a display I am literally fucked about updating it.

Any help would be massively appreciated.

Dantek3 · Nov 29, 2015

Just a small update. I am not locked down to this MB/CPU combo.

I have £220 in CEX Vouchers plus I can get staff discount so I probably could get any CPU cheaper there than anywhere else. If you think this setup isn't worth it, could you direct me to a good MB that I can get in the UK and CPU to go with it.

1LiquidPC · Nov 29, 2015

Can you try another GPU in the X79 board to see if it will POST? I keep a $30 basic cheapo GPU around for this reason. Could need a BIOS update to recognize the 980Ti being much newer, though it works fine w/ old Gigabyte board. Motherboards can be picky with certain GPUs sometimes.

Dantek3 · Nov 29, 2015

Well I can borrow a multitude of GPUs if needed to test it out. I'll grab a 760 or something like that at work tomorrow.

Should I try for a GPU with a VGA output incase it's not reading the DVI/HDMI?

1LiquidPC · Nov 29, 2015

Either should be fine to test. May want VGA output to be sure just in case. We know the 980Ti works fine in another system, so this would be what I'd test next as you already tried the usual to get the board to POST. On a side note, these CPU's OC pretty easy. I got my 3930k to 4.5Ghz with minimal effort.

Dantek3 · Nov 29, 2015

Yeh I just put the 980ti back into my old PC, it's how I'm actually on this website now.

But it's massively bottlenecked by the AMD 1100T so my sadness is real.

1LiquidPC · Nov 29, 2015

I can imagine the 1100T would be quite a bottleneck for it. Hopefully, a UEFI update will get you up and running. I was using an ASUS R4E for my 3930k, but the most recent GPU I had in that setup was a GTX 690.

Dantek3 · Nov 29, 2015

What do you think of the 3930k? Obviously it's gonna be an increase over the 1100T but I'm a pretty avid gamer so I'm concerned it's overkill just for that.

Edit - Also, I got a Coolmaster Hyper 212 Evo (Recommended by this board), how would I go about overclocking the 3930k with minimum effort? Total Over-clocking noob.

1LiquidPC · Nov 29, 2015

It should be a nice upgrade even at stock speed vs the 1100T. These socket 2011 CPU's can get quite power hungry and toasty at higher OCs, but you should still be able to if your interest to get a decent OC. Just be sure to have good airflow in your case as the VRMs around the CPU socket get warm and can throttle your CPU if they get too hot. The settings for OCing would be different on your board, but for mine it was pretty simple. Most settings were left on auto. I simply enabled the XMP profile for my RAM, which set the VTT and VCCSA voltage to 1.25, and I manually set the CPU vcore voltage to 1.36. After this, I just increased the muliplier from 32 to 45 and "Sync All Cores". I disabled speedstep, C1E, power saving settings as well, so my CPU would always run at full speed (personal preference). Again, this is just a quick rundown of what worked for me. Had to stresstest, ect. to verify settings and stability. There are plenty of OC guides to be found for OCing 3930k CPUs. One note to point out is the "stepping" revision of your 3930k, as newer ones were said to "degrade" when using VCCSA over 1.2v. I was using 1.25, but mine was old revision, which apparently could tolerate more voltage. This comes with the territory when OCing.

Dantek3 · Nov 30, 2015

Bump

Another update. Used a radeon 6870 and a 760 gtx without any success, still no display.

1LiquidPC · Nov 30, 2015

Odd. Doesn't seem to be POSTing. You mentioned the board itself is new, what about the CPU? Possible one of them is defective and was "put away" some time ago? Another thought is the revision on the 3930k. Do you have the box around, or can you read the code on the CPU itself? Looking at Intel's site http://processormatch.intel.com/Processors/CompatibleProcessors?componentName=dx79to, certain revisions of the 3930k needed a newer BIOS to POST. If your board is an original model w/ old BIOS, and CPU has a newer revision code, it could explain why things aren't working.

Dantek3 · Nov 30, 2015

I got the CPU from CEX but it was tested and working when I purchased it there, so unless I've damaged it somehow (It was boxed) it's not that. I've also done my research on that CPU code, it's a SR0KY model (The old 280 bios min) so it should be exactly compatible with the MB.

1LiquidPC · Nov 30, 2015

OK, that eliminates that then. Although unlikely, is it possible that the board doesn't like your specific memory modules? I've seen this happen before, though mainly with OEM systems. The systems just won't POST if certain modules are installed. If this isn't it, seems like it's going to be a bad board, as other GPUs don't work, and 980Ti works fine in AMD system, and X79 BIOS supports your revision CPU.

Dantek3 · Nov 30, 2015

I've tried 4 different Corsair 2gb sticks, 2 unbranded 2gb sticks, 4 OCZ gold heatsink sticks. 1066 GHz, 1333GHz.

It's probably gonna end up a bad board which makes me really annoyed as it was sealed when I got it, so it means it was defective from Intel in the first place. I'm honestly gonna try to take it to my local computer shop tomorrow and see if they can get it to post. If not, I'm gonna scrap it as I have a cheap crappy LGA1155 board I'm not using, and just swap the 3930k for a 3770.

1LiquidPC · Nov 30, 2015

OK. Curious to see if they have any luck w/ it. I can't think of anything else to try, as you covered just about everything. Still odd though, as code 00 as you pointed out means "ready to boot". Just looking through some Intel forums, they responded that when you see this 00, your system has already passed POST.

Dantek3 · Dec 3, 2015

Update.

I took the board to the shop and they told me it was defective, so I scrapped it and purchased an ASRock Fatality H97 Motherboard and an Intel 4790k. Installed it earlier today and it worked straight away.

Thanks for helping 1LiquidPC.

1LiquidPC · Dec 4, 2015

Glad you got it sorted. At least they got the same result at the shop you got so we didn't miss something. Enjoy the new board/CPU. Should be very fast

Intel DX79TO with 3930K not posting/No display.

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