Error 769 when trying to connect internet

[ImNewbie123]

HELP!!!! How I going to fix error 769 to connect internet??? It happened after I unplug my ram and clean the dust and then I plug it back... The network adapters in device manager was missing but my local area connection was empty except for create new connection and others.... My PC have integrated network card and external network card but both of it didnt work.... If I reformat my HDD will this error fixed???? Guys, please help me!!!


~I using my dad laptop which connected wireless connection~

Edit
I using Window XP SP2... Can It be fixed if I install XP SP3???

 

[Enduser89]

I'll take a stab at this and assume that somehow the drivers got uninstalled/corrupted if it's not showing in device manager correctly. Go to the manufacturer's website and download the drivers for your NIC from them.