So my power went out for a few seconds las week when it came back i turn on my pc and i could not connect to the internet i checked my drivers and i had no network adapter i try re installing and keep getting the same message "the realtek controller was not found if deep sleep mode is enabled please plug the cable" I try looking up solutions for it here is what I have tried

Going to bios and setting the defaults
Taking out the ram
Taking my whole computer apart
Installing the drivers from the website and disc that came my motherboard

I don't think it's the NIC card because when I connect the Ethernet cable to the pc it lights up green so I don't know what to do can anyone help

I am running windows 7

thanks for the help here is the computer i build so far
http://pcpartpicker.com/p/1g4Rd
two more question
1) what optical drive should i get
2) is this a good build should I invest more on anything or less on something?

my range is between 700 to 900

I am planing to build a gaming PC but I am not good with computer so I have a couple of question
1) when looking for a case what do I look for
2) same with the powe supply
3) what is the minimum I should waste to be a good pc that runs at a constant 60 fps in decent setting not maxed out but not low
4) what are the parts should i really invest more that others
5) are all parts compatible or should I be looking for something specific

all answers are appreciated

I got better when I realized there was a m2

Waldo just wondering how reliable is that source in regards to prices and quality of stuff I am really horrible with computers so I don't know but I also want to build a pc and that would be a good guideline to follow