Can anyone clear this up? I have two pc's both running XP Pro networked together because they share my internet connection. For months I have had no problems with this setup. A few days ago the lights that are supposed to illuminate on the face of the network card stopped illuminating. I thought it might have been a dodgy cable, so I replaced it with a new one. Unfortunately, this didn't cure my problem. I deleted the network cards from device manager on both pc's, reset and let XP reinstall the drivers. But no, this didn't do shit. Will my network card need replacing? I have two Realtek RTL8139 PCI Ethernet Cards. Are there any programs to test my hardware? Any help would be great! Cheers.