Solved PC boot up one day. no network card installed? What?

[realflow100]

is soldered onto motherboard how is not installed?? it not showing in device manager as a network adapater so i cant install a driver is my computer dead?? was working flawlessly the day before no problem. i dont want to reinstall windows because of a stupid network driver problem

 

[ShoTTaS]

if you have the Driver CD or DVD try re-installing the network driver. or you can download from the support of the manufacturer of your PC.

 

[realflow100]

I already tried reinstalling the network driver by downloading from realtek on my moms computer and putting on flash drive but it told me to plug a cable in and restart the computer (already plugged in and nothing changed) still no network card SHOWING in device manager so basically i can't manually right click it and click update driver because its not even showing in device manager tried safe mode work networking tried everything except reinstalling windows nothing makes my network adapter show up in device manager.
looks like im screwed and just got to reinstall windows

Edit: After dozens and dozens of restarts it says "Network driver successfully installed" Whats going on here??? thats so weird!