I have no idea why, but my computer is giving me nothing but trouble.  I am up to my third video card.
 
I previously had two GTX 970 cards in my machine.  Both cards failed over a period of time of under a year.  They have since replaced it with a GTX 1060 6GB.
 
Tonight I noticed some very strange issues.  Firstly when I turned on my computer the screen was blank for a good couple of minutes - i could shut down the computer by briefly pressing the power button, which suggests that the OS had never loaded and the computer had hung at boot.  After rebooting it, it seemed fine.  It then did the same thing intermittently several times.  
 
I recently bought a new monitor - an AOC G2770PF.  I noticed that when going into the BIOS the screen would briefly refresh full of multicolored (think mostly white, pink and purple) pixels.  I kept swapping between the Intel graphics, the GTX 1060 as well as swapping monitors.  When the screen refreshed to load say the BIOS menu or the Windows logo that multicolored screen would appear very briefly, or in parts of the screen, i.e. the top and bottom.  At one point the screen produced some broken blue horizontal lines above the windows boot logo.  It hasn't appeared since.
 
A couple of times the video driver has TDR'ed, the first time it crashed the game completely.  The second crashed Wolfenstein 2's display and left the sound intact.  On two or three separate occasions games would randomly minimize.  One time while playing Destiny 2 one enemy started producing colored polygon tearing and flashing colors.  This went away after I turned away from it and turned back.
 
I have DDUed the driver and reinstalled it from scratch.  
 
Initially the multicolored pixel issue manifested itself on the new monitor and the old one was free of the issues.  The screenshot below shows what happened when I plugged it in again to the 1060.  The built in Intel card never produced this issue, although first time around the screen wouldn't even turn on!
 
Also for reference I should not that the bluetooth component of my wifi card has failed as well.
 

 
This is a perplexing issue.  Hopefully someone can sort it out for me.  Below are my system specs
 
Windows 10
Intel i5 4690k CPU 3.5Ghz (Not overclocked)
8GB DDR 3 1600 RAM
EVGA GTX 1060 6GB (Not overclocked)
EVGA Supernova 650 PSU
256 Sandisk SATA3 SSD
1 TB HDD
2 TB HDD
Gigabyte Z97-HD3 Motherboard
 
Cheers
 

Did the issue just start randomly or were specific changes done before? I know such artifacting only from problems with the VRAM :/
Do you have a chance to test the card in a different system?

Test the card in a different PC and see if you face same issues. If facing same issues best is to contact EVGA support and go for a RMA

I don't have another computer to test it in.  And the Windows logo screen only appeared a few times and has disappeared since.

I must also note that the pixels aren't the traditional black blocks but more like a pixelated CGA color pattern with small pixels, and they occur only with the new monitor.

Both were still under warranty, but under local law there is both an expectation of a reasonable amount of time in which the product should function properly (in the case of a computer, a few years) as well as the fact that the product must be replaced with something of equivalent value or specification or greater.
 
I have also had the motherboard replaced, the PSU, the Wifi Adapter (the new one needs replacing as the bluetooth no longer works) and I'm up to my third graphics card.  I have no idea what is going wrong. I am positive I am not doing anything wrong.
 
I wanted to argue with the company that the 1060 is not equivalent to a 1070.  They insisted on giving me a 1060.  I would like someone from the company to help convince these guys they are in the wrong.

mark_thaddeus
Ok hold on, the software used is memtest86, this tests the memory of the PC and not the GPU. The errors you're seeing are errors of your RAM. So you're ram is borked and not your GPU (though it could be affected), considering that all your cards plugged in are experiencing the same problem
 
Are you OCing your RAM at all? Do you have another set of RAM sticks to test? If you have another set of RAM plug it in and re-run memtest86. If you don't have another set of RAM sticks revert to stock settings and re-run the memtest86 to see if any errors pop up. 

memtestG80, not memtest86.  I've already tested the RAM and it checks out OK.

I haven't seen any of these problems in the last few hours, so I'm not sure exactly what is going on.  I'll keep an eye on it.

Sajin

Fat_Angus
Both were still under warranty, but under local law there is both an expectation of a reasonable amount of time in which the product should function properly (in the case of a computer, a few years) as well as the fact that the product must be replaced with something of equivalent value or specification or greater.
 
I have also had the motherboard replaced, the PSU, the Wifi Adapter (the new one needs replacing as the bluetooth no longer works) and I'm up to my third graphics card.  I have no idea what is going wrong. I am positive I am not doing anything wrong.
 
I wanted to argue with the company that the 1060 is not equivalent to a 1070.  They insisted on giving me a 1060.  I would like someone from the company to help convince these guys they are in the wrong.

The company? Who exactly are you talking about? 

The retailer.

You need to contact evga and explain your situation to them. Both your 970's should be replaced with two newer gpu's that support sli. Being stuck with a single 1060 would be unacceptable in my book.

Oh, ok.