My ethernet card isn't showing up under my network connections. So I check the device manager and it wasn't installed also. Alot of other things were uninstalled like wan mini port, ethernet packet scheduler and a whole bunch of other stuff related to internet,protocols and such. This problem happened right after I took my PC out and brushed it and vacuumed it to clean the dust. My ethernet card gets an error code 31 unable to load the drivers. I really doubt my ethernet card is faulty. I also tried installing my USB ethernet card and the same thing happens. I have disabled onboard ethernet and lan. Still nuthing. I did (add hardware) and results were the same. I'm going to surf the net for info if anyone had this problem or know anything that could help plz post.TY edit: I also checked my NIC for a link light and it was on and blinking just more info added.