New pc case and mobo p5b-vm do green light on board

Story time: a few years ago I started upgrading my pc an hp a6244n I bought a cpu and a gpu GTX 550 ti And an Intel e7500 the gpu worked but the cpu did not because the mobo could not support it so I bought a mobo that could i.e. (P5b-vm do) but the chord for the power button did not match so I recently bought a case to get it all working a rosewill fmb-01 and got it together only to find there's a green light blinking on the mobo when I went to plug it in I also bought a PSu Rosewill 450W 80 PLUS GOLD Certified Power Supply CAPSTONE-450 Black

Is it this light?

Layback Bear said:

The manual that came with your new motherboard should tell you what the blinking green light means.

As I said I bought most of these parts a couple years ago so I honestly don't know where it is but I Think there's an online manual

derekimo said:

Is it this light?

Yes

fspsyco said:

derekimo said:

Is it this light?

Yes

Well the explanation for that light seems to be easy to understand, if it's on don't start plugging things in or unplugging things. It's basically a power indicator to remind you not to do those things.

That's on page 18 of the manual,

e2869_p5b-vm-do.pdf

derekimo said:

fspsyco said:

derekimo said:

Is it this light?

Yes

Well the explanation for that light seems to be easy to understand, if it's on don't start plugging things in or unplugging things. It's basically a power indicator to remind you not to do those things.

I'm just trying to figure out where I went wrong I'll upload a couple pictures here to see if you guys can help diagnose the problem wether it's my bad pc knowledge or something else

Layback Bear said:

I do wonder why the light is blinking.

I was wondering why it was blinking too, I didn't see anything in my quick skim but it might be blinking to alert that plugging something in is not supposed to be done while it is on.