Gigabyte GA-X99-UD5 Wifi Rev 1.1 : LED Error 50 and 55

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Tomnibus

Tomnibus

Commendable
Nov 28, 2016
20
0
1,510
I have been putting this machine together over several days as I get components in. It was working great, I plugged everything in (except for the SSD) including RAM with it outside of the case. I upgraded the BIOS to F22 and set some settings. Then powered it down.

The Case I had didn't allow the 8-pin ATX plug to reach so I purchased an extension cable. My son got it in today and plugged it in and powered on the machine to see the BIOS screen to verify it powers on. Then he shut it down and left for work.

Later, he got the SSD out of its packaging and only plugged it into the power supply not realizing that it needed a SATA cable to the motherboard. He then texted me to say that he's only getting a blank screen and it won't boot. He had to force it off.

I took a look at it and the LED on the motherboard starts out flipping around and those 60 a few times, then it says 50 and then ultimately 55 and stops there. No video is displayed.

What happens after I pull power and try different options is that it will boot, "50" will show up on the LED, then it will shutdown and restart itself and then show 50 and a few seconds later show 55.

I tried re-seating the RAM, I tried moving it to different slots and only using one module. I also tried no RAM at all and with that the machine will turn on for 1 second and then power off and keep attempting to boot over and over.

The RAM is GEIL brand and it's on the compatibility list for the motherboard.

I unplugged the hard drive and tried resetting the CMOS and flipping switches on the motherboard to try different things and nothing is working.

People online said "bent pin" for the CPU but this CPU had no pins to bend, the CPU is a 2001-v3 socket Core i7-6800K that just had little dimples where it connected to the socket.


I can't think of what could have happened, it was working just fine.
 
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Qcode 50-55 indicates an initialization error with your RAM. And usually its either invalid memory type, mismatch or incompatible memory speed. Post will not advance till the error is corrected.
It can be a memory frequency or a Timing Issue and the system rebooting as you describe would do this.
A mismatch can mean the RAM is not suitable for the CPU.

They are correct mentioning bent pins however, the pins they are referring to are located in the MB CPU socket and if any pins are bent then that can cause your issue.

Also a Bios update if not already done may be required. Bios revision updates are to address new RAM types and stability issues. You may have to clear your CMOS.

Please list your exact Geil RAM part No to check for compatibility and frequency.?
 
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The RAM is Geil GPR416GB3000C15ADC: DDR4 3000 (PC4 24000), Timing 15-17-17-35, Cas Latency 15, Voltage 1.2V~1.35V

So I should check if this RAM is compatible with the Processor? The motherboard manufacturer already showed it on the compatibility list.

Would this allow it to run just fine and then suddenly not run at all?

Edit: I just checked this site: https://ark.intel.com/products/94189/Intel-Core-i7-6800K-Processor-15M-Cache-up-to-3_60-GHz and it says RAM DDR4 2400 or 2133 and this is DDR4 3000. So that would be the problem?
 
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Your Gigabyte GA-X99-UD5 MB supports up to 3333MHz however anything above 2133Mhz is considered an OC. So they may or may not play fair with your CPU and that would depend on the strength of the CPUs IMC (Integrated Memory Controller)

Most times the Bios will set the frequency back to 2133mhz and boot OK but not always. You may get them to work by manually entering Primary Timings and adjust Voltage in Bios.
Try clearing your CMOS back to default and then access Bios for XMP profile.
I see you have updated Bios to latest however if clearing CMOS will not advance Post then re-flash the Bios in case its been corrupted.
If that don't work then return your DIMMs for a kit at 2133MHz.

Performance wise there is not a great deal to gain using higher frequency RAM.


 
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I can't get into the bios at all. I am researching DDR4-2133 RAM. I am bummed my local store doesn't have any in stock! You would think Microcenter's flagship store would be better than that.
 
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How have you tried to access Bios.? Normally continually depressing the delete key during Post will get you there.
Your MB also has GO2BIOS. This should allow direct access using the F7 function key during Post and bring up the GO2BIOS menu. Press the button for 5 secs and, If it works leave fast boot disabled for now till the system is running and stable. You also have a Memory Try It! function in Bios if/when you can access Bios. Default is set to "disabled"
Try also with a single RAM module in the DIMM2 slot at startup.
Are you saying that Microcenter have no other manufacturers 2133MHz DDR4 DIMMs at all.? Corsair, GSKill or even Kingston are good.
That's worrysome.
 
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I have a Direct to bios button, I tried that, I got nowhere. It doesn't show any messages on the screen at all. I didn't try F7 repeatedly, but I can perhaps try that.

I did try a single RAM slot, didn't help.

I looked at my local Microcenter computer store and they had in stock only 4-gig sticks of Crucial RAM I wanted 8-Gig. So I had to order them from Amazon and despite ordering overnight shipping, it still says an estimated arrival date of Dec 9th.

I am still confused as to why I previously was able to get the system to boot up just fine and we got into the BIOS and set settings and everything. No issues. Then suddenly it decides it's a no-go.
 
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Yes its strange, Normally clearing CMOS and re-flashing the Bios would allow you to access Bios if corruption has occurred. How did you flash your Bios and did it take.?
Also your MB has dual Bios. Did you try that.?
 
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The new RAM isn't in yet (as I said, it may not be in until December 9). But I tried more things with the DDR4 3000 RAM with no results.

I tried again, 1 RAM stick.
Reset the CMOS through the short-method and via the button inside method.
This motherboard has Q-Flash Plus so you can flash the bios simply by putting a USB stick formatted properly in the back in a special slot. I did that, I watched it re-flash the bios, and it came back up the same error.

I may have some DDR4 2133 RAM at work and I will bring it home if I do and test. If I still get nowhere, then I will have to remove the CPU and make sure I didn't bend any pins but I am very confident that this is just fine.
 
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I was at MicroCenter today and the guy there said that while DDR4 3000 RAM wouldn't downgrade properly to 2133, DDR4 2400 would just fine. He said the 3000 would be "too far to go". I was skeptical but I went ahead and bought some DDR4 2400 RAM just to see. I will try it when I get home tonight.
 
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The DDR 2400 RAM didn't work. Nothing Nada.

I thought, perhaps a short in the motherboard against the case? I mean, all the screws for the case didn't have the padding I normally see under mounting screws. So, I took it out and put it on cardboard and still wouldn't boot.

This motherboard was purchased as an open-box item. It has a 90-day warranty. It's normally a $300 motherboard I got for $97. I am hoping that if it is a problem with the motherboard, I will be able to warranty replace it.
 
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So this continues to be a problem. it is not solved!!

I bought some DDR4 2133 RAM Online that is on the compatibility list for RAM. Before I got that in, though, I sent it back to Gigabyte to be RMA'd for them to test it.

Well, they came back and said it was fine, it passed all tests and there was no problems with it. I was thinking, well, perhaps it was the DDR4 2400 RAM.

So, I got it back today. I installed the DDR4 2133 RAM, it booted fine. I set the bios setting to allow virtualization and then installed windows 10 and all the drivers. Then I shut it down.

I shut it down because I needed to get to work and pull out a network cable to wire it to my switch upstairs. I connected the ethernet and then turned on the computer and I get an error 50!!

Are you $%#%&% kidding me?!
 
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I've done all that already previously before the motherboard went back for testing. I cleared the CMOS multiple times, I also used the q-flash to re-flash the bios. I tried multiple RAM configurations, etc. I have done it all.

The only thing I can think of right now, which is the theory of a technician I contacted, is the power supply is not giving out consistent power. It is going to be tested.
 
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I purchased a new Corsair Power Supply (650W) and the same thing happens. I don't know what the Motherboard company did to get it functional again, but I can't.
 
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Why your RAM is failing to initialize is a mystery cause as you know the 50-55 Qcode error is related to your RAM and off coarse the Post cycle will not advance till this is rectified.

Lets recap:
Its not the MB and the RAM has been tested OK.
It's not the PSU which has been tested.
Bios updated and CMOS cleared.
Tried with One DIMM module in first slot and switching around. Also checked all modules with Memtest86.
It can only be the CPU and you may have bent pins in the MB socket. Can't remember but did you check the MB socket for bent pins.?
Anything else I forgot.?

The strange thing is you did manage to boot successfully when you installed the new RAM. So again this suggests to me that whatever you have done has effected Bios or indeed the CPU or MB slot is faulty.

The CPU has a built in IMC (Integrated Memory Controller) and if it fails then you would have RAM issues.
We have exhausted anything else I can think of.
 
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Yup, you got it spot on. The processor doesn't have pins. It has these little nibs. The "pins" are on the motherboard itself but even then they're not really pins. They just are little depressions. I have taken it all the way out and re-set it. I also took it out to send in the motherboard and put it all back together.

I don't know what they did at Gigabyte to get it to work again for that hour I used it (the second time), but something they did made it work temporarily. I tried a different graphics card tonight and that didn't work.

I still have the processor box I could perhaps attempt to do an exchange on it. I don't have the plastic holder that the processor came in. That is a bummer.
 
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Its the only other coarse of action is to RMA the CPU. Intel are very good with their RMA process. You won't need the plastic cover, just package it carefully.

btw: What the MB socket has are pins and if ANY are out of alignment or flattened down can be an issue. If you have bent any you would void your Warranty as that is considered user error, so be mind-full of that. If you do have any bent, they can be aligned or lifted back up using a toothpick. The socket should be inspected with a magnifying glass.
 
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I took the processor back to the video store and got an exchange. It didn't work. Same problem.

There is nothing that can be out of alignment on the pins. This is what the bottom of the processor looks like (not my picture) http://images.anandtech.com/doci/10337/3_678x452.jpg

This is what the socket looks like: http://previews.123rf.com/images/cookelma/cookelma1409/cookelma140900109/31825724-Modern-socket-2011-v3-motherboard-for-a-home-computer-Stock-Photo.jpg (not my picture)

I inspected it thoroughly and it is good and clean, no issues. Also the motherboard MFG when they took back the motherboard would have checked that.

When they open tomorrow, I'm going to have to try to talk to them. I may just have to take back this darn motherboard.
 
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