android phone's wifi is turned off. Still nothing.

Either a scam or extortion, I've added to ignore list.

Anyone is in Houston, come over, i do for free .
To prove it. )

You've got ONE strand of PCI-E cable trying to power ~300W - that is likely your problem.

I am using something like this. I have tried 2 different PSUs.

I am now trying this PSU that has 4 PCI slots, and has 2 strands with 2 each. Is that what you meant ?

What dogie said.  Trying to run a Cube off a splitter/extension like that is ill advised.  I'm surprised it worked at all.  Trying that same cable with a different power supply isn't likely to solve the issue long term if at all.

You should be running two independent lines from the power supply for each Cube.

That means those running two Cubes would need four lines.

I think this has been in the OP for a while.  It says a "typical computer PSU with 2xPCI-E 6 pin power connectors"

I am running 1 cube with 2xPCI-E 6 pin power connectors. maybe I wasn't clear in my post. I said I have another PSU that has 4X PCI 6-pin connectors that I can test too with 1 cube on 2 different lines.

I am using this PSU now. This has 2 lines (each line has 2 pci-e connectors). I am connecting the cube with 1 connector on each line. Is that what you mean?
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153167

I have to admit I don't understand some basic concepts here then. I still didn't get it! can someone please explain again where I am going wrong.
My other cube works fine. It's just this one cube.