onboard lan dissappeared

[nuhash]

I recently bought a refurbished gigabyte r5450 and only just installed it, only to find that my onboard lan has dissappeared

I have an Asus m5a78l-m usb3 which has a realtek lan controller, I checked bios to ensure the lan was enabled and also set the bios to default settings (lan is enabled by default apparently). I then booted windows and I get the red cross on the network icon, also my router doesn't light up the light for the Ethernet socket my pc is connected to, also bypassing the router has no effect

I went for the driver cds and reinstalled the related drivers but kept getting something along the lines of "onboard lan in deep sleep mode. Plug in to turn on" , I looked up the problem and found that this was a common realtek related issue. I read that reseating ram or clearing cmos should wake up my lan but it hasn't worked.

Anyone have any ideas, I am gonna try linux livecd in a sec but I doubt it would as it seems the lan controller refuses to respond

 

[nuhash]

somehow fixed itself, seems i got worked up over nothing

 

[BuZ]

Some LAN network cards and drivers disappear now and again due to updates and software changes. Or Windows Updates being applied. No need to worry, just search the issue up and usually you will have support for it (that is if someone has experienced the same issue as you).

I've had many problems with drivers disappearing and LANs disappearing and suddenly they reappear from nowhere. Like you said "somehow fixed itself" happens to me a lot. Don't worry; it will be an update or applied update of something installed recently adapting to changes in software or maybe hardware.

Extra info: Some LANs go into sleep mode over a certain time period and you have to do something to get them back into gear.