In April 2016, I purchased a GIGABYTE GA-Z170X-Gaming 6 (rev. 1.0) motherboard form Newegg. The motherboard was delivered on May 3rd 2016. The fan headers started dying on the motherboard less than 6 weeks after it was delivered from Newegg. Unfortunately it was outside of the Newegg.com 30 day return window, so I had to deal with Gigabyte's RMA process. When I eventually sent the motherboard in for RMA repair, Gigabyte's RMA facility employees damaged my motherboard and refused to repair it.
 
I have a Corsair H75 water cooler for the CPU. I had the cooler's front 120mm radiator fan plugged into the CPU_OPT fan header. I have the rear radiator fan plugged into the SYS_FAN1 header. I noticed my CPU temperatures were very high(60C) at idle. I opened up the case and saw that the front radiator fan was not spinning. When I rebooted the PC, the front radiator fan started spinning then stopped after a short time. When I rebooted the PC again the front radiator fan never spun upon startup. I rebooted the computer several tiems and noticed that the fan would either not spin at all upon start up or woudl spin for a short time then stop. I checked my settings in the UEFI/BIOS and they had not changed.
 
To troubleshoot, I shut down the PC and plugged the front radiator fan into the SYS_FAN3 fan header on the motherboard. When I rebooted, the front radiator fan was working properly and my CPU temperatures were normal.
 
I also noticed at that time that the 120mm front case fans weren't spinning at all. I shut down the PC again and plugged the front case fans into a 4 pin Molex to 3 pin fan adapter. and rebooted. Upon reboot the front case fan was spinning.
 
I originally requested a RMA, then found out Gigabyte ships UPS ground for return shipping and I was told that the RMA process with Gigabyte can take several weeks. So, I decided to wait until I had some other computer to use while my motherboard was away for RMA repair/replacement because I had no other computer to use at that time.
 
While I was looking for a used/cheap socket 1151 motherboard to use while my motherboard was away for RMA repair, I ran into another issue. On September 8th, 2016 the computer wouldn't boot. The motherboard would display error code 35, which could either be a CPU problem or a motherboard problem. I've read that Intel CPUs rarely die under normal use and I suspected the motherboard, however I wasn't sure what the problem was and didn't have the spare parts to diagnose the issue. So I took my computer to a local computer shop that has a good reputation, many good reviews, and said they are a Gigabyte authorized retailer. Their $20 diagnostic fee is less than the cost of another socket 1151 CPU to test my computer. They used a different CPU and RAM in my motherboard and confirmed my motherboard is the issue. While my computer was there, several shop employees inspected my motherboard and saw no damage to the board or CPU socket or pins.
 
I requested a RMA from Gigabyte and bought a cheap motherboard to use while my motherboard was in for repair.
 
I sent the motherboard into Gigabyte for repair after getting a RMA. Before shipping, I took photos of the motherboard for insurance purposes just in case something happened in shipping. I've been taking photos of items I shipped for a while when shipping electronic components, including ones I sell on eBay and through forums. For a week the RMA stated BIOS corrupt repair/reflash necessary. On October 6th, 2016, after Gigabyte's RMA facility had my motherboard for over a week, Gigabyte emailed me and stated the motherboard is damaged, they are voiding my warranty, and returning the motherboard to me. Yet the motherboard was undamaged when they received it and they originally stated the BIOS needed a replacement for reflash. To determine the UEFI/BIOS was bad wouldn't Gigabyte's employees need to mount a CPU and CPU cooler to the motherboard? When the motherboard was returned to me, there was damage near one of the CPU cooler mounting holds that wasn't there when I sent the motherboard to Gigabyte for repair. Also Gigabyte didn't send the motherboard back in the anti-static bag I shipped it in. The motherboard was shipped in a box with a couple pieces of foam and let it bounce around in the box the entire time it was shipped back to me.. Because my motherboard was undamaged when I sent ti to Gigabyte, it appears someone at their RMA/repair facility damage the motherboard mounting or mounting a CPU cooler to test the motherboard then didn't want to get in trouble for it, so they said it was already damaged.
 
After looking around on forums and reading consumer reviews of Gigabyte products, I noticed other people who complained about issues with the RMA process and being denied RMA repair for damage that wasn't there when the product was shipped to Gigabyte's RMA facility. Also, I found other consumer reviews of my motherboard stating that they had issues with the BIOS within the first month of ownership. The Better Business Bureau currently have Gigabyte listed as an F rating due to warranty/repair issues and problems with new products that they haven't fixed.
 
Here are links to some hardware manufacturers and their BBB ratings:
 

 

 

 

 
Zotac B- rating
 

 
In summary, the motherboard didn't properly a few weeks after I bought it. Then it completely died. I received a RMA and sent it back to Gigabyte. After Gigabyte had the motherboard for a week they damaged it at their repair facility, then stated the warranty is void and will not be repairing it. They refuse to take the blame for damaging my motherboard.
If you are considering buying a Gigabyte product in the future(Motherboard, Graphics card, Computer, etc...), remember they have a bad reputation with the Better business Bureau and have a history of RMA/Warranty issues reported by their customers. You are better off spending a little more and buying products form a company that doesn't have RMA/Warranty issues.
 
Here is a photo comparing the motherboard the day it was shipped and after I received it back from Gigabyte.

 
Here is the link to the high res version:

 
Edit: Fixed some typos and links

bcavnaugh
EVGA A+ Rating All the Way.
The problem today is that no one can wait they want it now and I mean now.

I must be no one then. Really thought I was someone until you posted that. :)

bcavnaugh
Zotac B- rating

lebel

bcavnaugh
EVGA A+ Rating All the Way.
The problem today is that no one can wait they want it now and I mean now.

I must be no one then. Really thought I was someone until you posted that. :)

Better be carful as you are on the Good Guys Side ATM.

I'm no one remember

fearpoint
Yeah I learned a lesson after my dealings with Viewsonic and the criminal scam they run regarding RMA.

Mine was with ASUS and MSI, Never Again

No matter who you use take high resolution photos of all sides of a product before shipping RMA. Include date somewhere in the photos to correlate time. Damage is the single largest refusal for RMA that I see abused by manufacturers. CYA with photos.

I can also vouch for the horrible RMA process with Gigabyte mobos (them denying the RMA) and the mostly painless RMA process from EVGA.  I've had also had decent luck with MSI RMA - but it was pretty slow.  Never had to RMA an ASUS product yet *knock on wood* but have heard mixed things.  In all honesty though the goal should obviously be to not even need the RMA service to begin with.
 
Even with that said I just can't see myself buying an EVGA motherboard.  From what I've seen their boards tend to cost more and have less features than many of the competition.  The one big "feature" omission in my opinion is fan control - from what I've seen the EVGA boards have very minimal options when it comes to that.  I don't need RGB lighting and crazy color PCBs but I'm not spending quite a bit more for something that offers me LESS.  Their video cards tend to be closer ranged in price to the competition so it's not as big a deal there.  If EVGA boards could offer something along the lines of the ASUS fan control I'd take a SERIOUS look at them on my next build - otherwise I will stick to what gives me the features I want at a good price.

stalinx20
Why does EVGA not have a sticky for the "top reasons to consider EVGA over other brands"?

Because all we would see would be posts telling us not to and that the other card company is a better company and so on.
They Do show this on their Home Page. The Forum is not the best place to post this coming from EVGA but you could.

lebel  So then KFA2 is a good or Bad for RMA?
I cannot get to their website

I've never had to RMA anything from MSI yet.  *knocks on wood*
 
ASUS?  My one experience demonstrated the utter futility of it.   I gave up, cut my losses and simply replaced the motherboard.
 
EVGA:  I had to RMA my pair of GTX580's.  EVGA replaced them with GTX660Ti's.    I was a little disgruntled about the monetary downgrade, but couldn't complain about the ease and painlessness of the process.

I do a decent amount of PC repair on the side and RMA a bunch of stuff. Gigabyte is the worst computer part vendor that I've dealt with. They basically determine if they will repair (most of the time) or replace at will. Gigabyte is not a member of the BBB, and if you don't agree with their evaluation, then you have no recourse. 
 
It's too bad the support is so bad because they engineer some nice stuff. I have to remind myself when I have the urge to buy something. 
 
+1 for EVGA support.