Found-out the issue... However, you are also right...
Normally, the computer is setup on AUTO, but someone (not my original computer)... had setup x.x.137.0 as the gateway for IPV4 assignments of the DHCP server.
That, and my firewall was rejecting everything, not sure how that happened.
Solution: If you are plugged directly into the machine, without a router.
Go to "Control panel" -> "Network and Sharing Center" -> (Side bar) "Change Adapter Settings"
Select the network-card that you are plugged-in to...
Select: "Properties" (2nd-mouse or right-mouse click menu)
Select: "Inernet Protocol Version 4 (TCP/IPv4)"
Select: "Properties" (below the list)
Unselect: "Obtain an IP Address Automatically"
(Enter the following below)
IP Address: 197.168.1.1
Subnet Mask: 255.255.255.0
Default Gateway: 197.168.1.0
Prefered DNS Server: (blank) or 8.8.8.8 (<- Setup page expects this, but blank works too, since this is manual.)
END OF SOLUTION
If using a router, there is a similar page in the advanced network setup (for the router, get to it by typing the IP of the router DNS)... Same values... but no DNS there... The router is usually the DNS.
This, with using my USB WiFi, bridged to the network-card, treats my computer as the router. I don't have any more free routers to use, or plugs left to operate them.
However, the five cards pull about 1800-1900 Watts (15.83-16.25 Amps) at the wall, which is WAY tooo much power for the 18ga wire they gave me. (18ga wire can only handle about 1800 Watts or 16-Amps peak in open-air, and only about 10 Amps enclosed in plastic-wire-casing, constantly.) This load-ability is reduced, even more, as the wire heats and resistance increases, potentially causing an electrical fire. The wires were too hot to hold, after an hour of running.
Still, five cards gave me a solid 1.25THs at the box and an average of 1.18THs on Ghash.io.
Granted, I have the case cracked-open on the exhaust-side, about 1/2 an inch to allow air to actually flow through better, and I have inserted some air-dams to force the air through the fins. (As opposed to shooting over the top of them, essentially making the heat-sinks active-cooling, instead of passive cooling.) Sooo much easier to work with this setup, but it still could be better.
I have unplugged that fifth card, since I can not monitor the machine while I sleep, and the day will get hot by the time I wake. Add some 90F ambient temps to the already overheated wire and restrictive air-flow, and that is a setup for, well... a nice camp-fire. With the four cards, it is pulling only about 1400 Watts and giving only 1.02THs at the box and 880GHs on Ghash.io. Acceptable for the unit, for now.
Would like a way to tune it... Can it still be adjusted with PuTTYing into it, like the others?
I would rather have it run slightly leaner, and more "energy efficient". Running at 1THs and 1200-1300 Watts, with all five cards running. (Instead of four running full-blast, consuming nearly twice the power for a few GHs more, each card.)
The whole unit could be about 6" shorter (height) and about 1" thinner (width), and 3" less deep (long). Fits in a lot cleaner than the other design and stacks better too!
So now I have to find some good 14-16ga computer power-cable wire. One made for 2000+ watts. (Told you it would have been better to have two PSU's and power-cables. 3 and 3 for a 1.5THs unit, or just smaller units of 3-4 cards.)
I'll take some snap-shots, for those who like that stuff. Unfortunately, I don't have a great camera.