I have a room with three wall plugs one on each wall and all the boxes inside have four wires three from each end ogfthe box two black wires and two white wires so, I don't know how to wire them so it has power.. . so I want to know how I conect them all so when I test them with my tester the two yellow lights will show that I did it right and that its coerrect.. and it's a finished room with walls so I don't know where the wires come from. It's a recpeticle so the plug has two screws on each side two silver and two brass and a ground

Hi,
I would say to connect the black and white from one source to one side of the receptacle (black to brass and white to silver) and the others on the other side in the same fashion.
Peace,
Clarke

Hi,
I would say to connect the black and white from one source to one side of the receptacle (black to brass and white to silver) and the others on the other side in the same fashion.
Peace,
Clarke

So from each wire source that has 1 black 1 white and 1 ground, connect from one side as in top brass and top silver then the same from the other source but at the bottom

First it would be helpful if you would edit you post, using capital letters and periods so we can tell where sentences start and end. I cannot tell if you have three outlets on a wall or have three outlets on each wall. Run on, never ending sentences are incomprehensible. That red line underscoring words mean that the word is misspelled. Placing you cursor on the misspelled word and right clicking you mouse will give you possible corrections.
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Crigby is correct that the dark colored or brass screw indicates the hot terminal and the light colored or silver screw is the neutral. However, these are on opposite sides of the outlet. Therefore, he is incorrect in saying connect one set of wires to one side and the other set to the other side.

Edit you post and we will help you figure out how to re-wire.