Need Major Help For First Build

[Ghost-100]

I'm trying to build a PC for the first time and well... It's not going too good. The plan was to salvage an old Dell Vostro 470 and uparade a couple parts. These are my build parts:

NZXT H440, Antec 900w High Current Gamer, Gigabyte R9 270x, Ocz Arc 100 (240gb). These are the new parts and the rest were salvaged from the Dell. The old parts are:

http://www.ascendtech.us/dell-vostro-470-8500-motherboard-yjpt1_i_mbdellyjpt1dh77.aspx (Motherboard), i7 3770, the stock cpu cooler and 8gb ram. This is a picture of what I have done so far but I really need professional help as I don't even know where to plug things on the motherboard.

My problem is that I don't know where the power switch and power led etc. should be plugged in my motherboard.

[Frost Byte]

Try reading the manual of the motherboard... That should give you some answers.

[Ghost-100]

[Sam Z Man]

That motherboard is flex atx so the H440 will not work.

Also you do not need 900 watts ever.

What's your overall budget for it.

[coder-guy22296]

Try reading the manual of the motherboard... That should give you some answers.

where do you get a manual for a mobo found in a dell prebuilt system

[Sam Z Man]

where do you get a manual for a mobo found in a dell prebuilt system

I have the same motherboard currently, there is no manual, I tried looking. My rig is based off a vostro 470 as well.

[Ghost-100]

So the build won't work?

EDIT: I thought I read somewhere that it was a mini ATX or something?

EDIT 2: After plugging everything in there is an orange light on the mobo and the fans runs for a few seconds before stopping, what does this mean?

[Sam Z Man]

So the build won't work?

EDIT: I thought I read somewhere that it was a mini ATX or something?

EDIT 2: After plugging everything in there is an orange light on the mobo and the fans runs for a few seconds before stopping, what does this mean?

You may have a extra standoff installed that is shorting out the motherboard remover it and make sure its not the problem, I have that motherboard its not micro atx its the super uncommon flex ATX you can message me if you have more questions.