Did you made any hardware/software changes prior to the issue? Are you using a wired or wireless internet connection? Are you getting any specific error message while trying to go online? Follow the methods mentioned below Method 1: Restart computer in Safe Mode with networking enabled.
Restart your computer. When you see the computer manufacturer's logo, press and hold the F8 key. On the Advanced Boot Options screen, use the arrow keys to highlight Safe Mode with Networking, and then press Enter. Log on to your computer with a user account that has administrator rights. Now check if you are able to connect to network, if the issue still persists follow the next method Method 2: Follow the steps mentioned in the link and check with the issue. Method 3: Download and install the drivers from the link check with the issue.
Hope it helps.
Hi, I've just installed XP pro onto an computer I was recenly given It's an EP-9NPA+SLI. It has an NVIDIA nForce 10/100/1000 Mbps Ethernet card which is not being. WHQL drivers for NVIDIA hardware. NVIDIA >Download Drivers >nForce Driver. 15.23 WHQL: Release Date: 2008. Microsoft Windows 10 Usb Drivers. 09.12: Operating System: Windows XP. Use the links on this page to download the latest version of NVIDIA nForce 10/100 Mbps Ethernet drivers. Windows 7, Windows Vista, Windows XP. Nvidia Drivers.