Hey, Make sure that the Adapter you are using is not substandard.
Check the Wires, the connector's materials and edges.

or it'll end up like this: Burned 18 AWG Wire And 8-Pin VGA GPU Power Connectors

This could work if you build your Wallet/Market site over the blockchain.
Means you'll be needing a huge Bitcoin capital.

The Trades are happening within the site without sending BTC funds from one address to another (just pseudo-balances per account).
The Seller (of products) and Buyers will be issued with their own wallet(just receiving-addresses) containing BTC Funds which are not directly controlled by them (the private key is hidden, Multisig address will work)

Ex:
The Seller sold a camera worth of 0.1btc to Buyer.
0.1 BTC will directly credited to Seller's wallet and deducted to Buyer's wallet after the purchase within the site. This way, there will be no transaction cost and Item return/warranty refund won't be a problem.
Seller wants to withdraw his balance to his own(outside the site) adress, the site will "process" the withdrawal (Multiple Blockchain Transactions for less Transaction cost)

There will be a huge security risk behind this

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Or just make an online Store that accepts COINS. They process payment within their sytem not directly sending to the blockchain just like what I said above.
But they charge fees in every transaction.

Wallet and Trading at the same time, a little bit much for a standard user.
If you want, you can standardize trading like coinbase does. Then make the "Advanced" trading activatabe in the settings or another Advanced app similar to the Regular version if it will be an app.

Lol, this one sounds like a RMT (Real Money Trade) which is prohibited by game publishers.

Today
There are no possible legit solutions for you to earn while playing games.
Or playing "games" like in stake.com may let you earn some satoshi.

Seems like another "The Real Bitcoin" promotion for me.
Personally, I don't hate these guys but the way they goin' aggressive in selling Bitcoin Cash to platforms like when Steam temporarily removed Bitcoin as payment is a tactic going in the wrong direction.

Regular users be like:
BCC: This is the Real Bitcoin
Regular user: (sarcasm) Yeah right
BCC: Transactions are faster.
Regular user: ....
BCC: Transactions are cheaper.
Regular User: Will you sh*t up already.

CPU Mining?
There aren't any profitable options for you.
But just for fun or experience, you can try Monero or Electroneum.
If you didn't really need the rewards often, run a full node ETN because it's small at this date.

Join a pool for any of both options if you need a little bit if profit.
Electroneum: easier to mine, price might grow in the future.
Monero: the price is better today.

I'll quote it so everyone can see without opening a tab.
It's not loading, weird.

Seems sleeker than the previous boring orange theme.
But the "about" and "show some love" is still getting more emphasis than the main window.
And the Extension Icon above can make use of that theme rather than using Bitcoin's original orange icon.

Setup 2,
But can you find any better Brands other than MSI? In terms of longevity, those doesn't pass (or I am just unlucky).
Keep away from those RX580, you will be needing more than fans to cool them.

More like, it depends on your target coin's algorithm to mine.

In addition, are you dedicated to GPU or CPU mining? You have to research the coins you want to mine in order to have an efficient Hashrate using the minimal energy consumption available. Some coins doesn't even getting a lot of benefit from a powerful GPU like Monero/Electroneum unlike when you use the rig for Etherium.

Do not try overclocking right now.
Said that it's your 1st mining rig.
Start with the default bios setup, then try to check your system's stability.

Your problem seems coming from the SLI setup itself.
Are you using the SLI Bridge that came with the MoBo/Riser?
Cause it will work without it but struggle at high load.

Go to their downloads page Electroneum Miners, download the "Beginner's Pool Mining Software".
Install and start the app, Select from the 3 Pools available (You need a different/console miner to be able to connect in different pools).
Select your preferences (it's newbie-proof)
Start mining.

The Electroneum Node is available there too if you want.

I have seen a lot of this issue and it must be your PowerSupply (PSU itself or your connectors)
Although EVGA 1000w g3 is a good powersupply, you can't tell if the one you have is defective.

A bad PSU can work with a system that consumes a little juice from it (Your System without GPU) but become unstable at stress (like Starting the Miner)

You can monitor the Voltages at stress using HWinfo or other monitoring software. Start with a resource-heavy game/app (windowed) to monitor the voltages, next if it is ok (+-5%), start your miner. A camera pointed at the monitor will do.

And as an addition, maybe some of these early adapters aren't all interested in the development and just "kicked-in" to the news.
With a low file size of the node and cpu-limited mining, anyone can join. Some got a handful of BTCs in their wallets that must be forgotten or neglected due to worthlessness of bitcoin at that time. -cold stored btc that are not circulating.

---

Some Multimillionaires in Bitcoin aren't really millionaires in life...

This will do it.

This "transaction accelerators" somehow is beginning to be a workaround to choose transactions.

"The Design, the needs and the greed".
So much for a digital currency.

With the current difficulty setting of 10 minutes a block just for " fairness' " sake till we mined that maximum amount of btc doesn't work with today's events.
It was designed to be an equal opportunity to everyone who are mining. There are no "everyone" now.

The Hashrate is too damn high and the difficulty will rise with it.
(Read what others said) That electricity should have beed used for something else.

It depends on what is "waste" for you. That's why language is unconventional sometimes.

This will not be called Cryptography at all.
Use what is available and adapt to it.

Bitcoin evolved from "everybody must be able to run the node" to a competition driven by economy.

@Anti-Cen:
The thing you said about bitcoin to altcoins same with the domains, that's just how it is and that how "money-driven" things progress.
Tell me, is there something wrong with it? People just brand things/happenings/actions: good or bad, we can't do much about it.

There are Google, Facebook and useful domains, in digital currencies these are equal to Bitcoin and *others.

Try to confirm your transaction in any block explorer like blockchain.info if it wasn't already getting confirmations.
If it still got 0 confirmation till now, ask for a free "transaction acceleration" service in Marketplace-Services.

No, thanks for your info.
I've seen your post history and you seem to overreact with the current events, but to the negative side.
You can't even use your and you're and (same categories of words) properly.

Bitcoin is not as good as it was intended but there are still a lot of room to be filled. The code is Open-source, you're just skeptic-scared person.
Whether it fall or not, the people are to blame for the hype they made, not the code.

When USA banned this, it will surely be the end of the "To the Moon" hype.
Bitcoin will still continue but the price will plummet down.

Next time, when starting a Thread or News:

• 1. Keep those "No Tax with Bitcoin" headlines out! You know your Government will hate it.
• 2. Limit "The Government" topics a lot. Seeing CountryX and CountryY banned crypto-trades might encourage their assets to research more of the negative possibilities with digital currencies.
• 3. Be smart people, don't feed the scammers which are lingering mostly in our lawn. No Government, no law.

Your turn:

For newbies?
Take note:
Bitcoin was already being used as payment in most countries. Some well-known establishments will enter the game too.
And development is still undergoing updates to scale and upgrades to fix the current issues.
Just for your information: Bitcoin Core is still in its infancy of development at v0.15.1, but Bitcoin itself is now a valuable asset and well-known worldwide.