player9050

It's a weird thing.

Check connections to your hard drives/ssd, both power and data cables. If that didn't work, go into the BIOS and see if your main OS drive appears, if it does, select it as the #1 boot priority. Last thing I would try is a BIOS reset like XxSwankeyxX just said. Just wait like 10 - 15 mins before putting the mobo battery back in while power to the PSU is disconnected.

make sure your SATA is connected fine, maybe when you were changing cpu, you accidentally disconnected cable from HDD/SSD or mobo. Just make sure

Sometimes you need to use a workaround. If Windows 7 works, then so be it. If it doesn't, then keep testing. It's as simple as that. I'm not going to "listen" to you complain without actually trying reasonable suggestions. If you actually want to use your card, then you best continue testing. I'm not going to waste my time.

If you're willing to test it on W7, I'd give that a shot. A lot of people have issues with W8.

EVGA SuperNOVA 1000 G2  POWER SUPPLY UNIT.....like I said.

You need to plug in the fan header on the pump (the one with only one wire) to your MB CPU fan header. If you keep getting this error its an indication that the h100i pump may not be running(the pump speed should be between 2000 and 2500 rpm).

I have two gtx 970 in my build. I also tried 2 HDMI wires and different HDMI slots on the tv. Would it be worth a shot removing the graphic cards and trying?

so how many graphics cards do you have?

I'm sure if I worked at the store I'd have no problems getting access to parts I'd want.
I just don't know how willing they are to help the public and strangers, they aren't a PC repair shop, they're a buy PC parts from us shop.
All I can do is be hope for the best and offer them money, money to just try parts that they get to keep, it's 100% profit for them.
 
I won't mention my PSU being an issue during an RMA, and I'm aware it's SeaSonic and supposed to be great quality. I researched the f*** out of everything I bought, and research the f*** out of everything I do before I do it.
It adds more frustration because of that, I take so many precautions and do so much research before I make my choices, I do everything I can to avoid crap like what I'm now experiencing...
I've been thinking of anything I could have done wrong, and I can't think of anything. I didn't do anything stupid or dangerous with my PC. 
As you've said, everything I have is of high quality, which makes me think it's somehow my fault but I don't know what I could have possibly done.
 
You can save profiles in the Asus Z97 BIOS, and the profile I was using I had been using for over a month, I know I've said all this, but I only changed case fan curves as I recently got Noctua NF-A14's, clicked the save & exit button. 
It almost seemed like it froze for a second when I clicked save & exited. I don't know if the BIOS just got confused while saving or applying settings and corrupted something, but that should be fixable by CMOS resetting.
It's been that video ever since, I have no explanation, I wish I did.
 
 
Yea it's probably not a CPU pin. If I was going to buy a new mobo, it would be another Asus Z97-A out of impatience for the RMA process in Canada, and because I've heard I'll likely experience little to no issues with Windows and other stuff by replacing with an identical motherboard. Last thing I want is MORE troubleshooting and reconfiguring... Gigabyte was my second choice to Asus when first browsing for parts. My GTX 970 is made by Gigabyte and it's been great. 
Though everything in my PC has been great until now. Now something is not great.

I agree but I don't think it's the PSU look at all those protections it has I can't even count them, tell them that it stopped working never mention that you think it's your PSU, your PSU is very high quality it's made by seasonic they have the best reputation in PSU industry as fat as I know, I think you will find some parts at that shop you would be surprised what parts they have tho.

have you plugged in the 8/4 pin cpu connector?