I am having problems with any type of Network Card or Network USB adapter working with my PC running Windows 7. I had a LinkSys WMP54G PCI card working on this computer about a year ago as I was needing to use a wireless connection but then I didn't use it for 6 months. When I went to use it again, it wouldn't pick up connections at all. Thinking it was an issue with the card, I picked up a Edimax 7612UAn USB adapter thinking it should work out of the box. When I plug the USB adapter in, the standard Windows driver installation tries to run but an error message occurs stating "Device driver software was not successfully installed" accompanied by "Realtek RTL8191SU Wireless LAN 802.11n USB Failed". If I try to install the drivers manually, nothing changes and in Device Manager the following error message is displayed under Device Status "This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)". I am at a loss as to why this issue is occurring. Any assistance would be greatly appreciated because I only have so much hair left that can be torn out.