Yes the network card is the same ethernet card. If your intel pro/100 is onboard try to re install the driver from the motherboard drvier. Check also in the manager device it the network device have a complex to the other device. Follow this, Click START then RUN type DEVMMGMT.MSC then enter check if the network adapter have a yellow question mark. If you found the network adapter right click and uninstall it.and click the ACTION and click SCAN FOR HARDWARE CHANGES. After the installation finished try to connect to the internet. If still the same even you input the correct ip in the network configuration. Buy a new LAN card it's not expensive, because usually the onboard lan is easy to damage or not working properly you can installed and configured it but you cannot connect to the internet.
1. Please check the LAN settings in BIOS.
2. Install a fresh OS and the motherboard driver, network card driver in support CD or downloaded from official website.
3. If the network card is not recognized in Device Manager, please contact reseller (service center) for tests.
4. If the network card is recognized in Device Manager, please do some troubleshooting as the following steps:
4.1. If there is yellow question mark or exclamation mark before the network card, please re-install OS and drivers. If the problem persists, please contact reseller (service center) for tests.
4.2. If there is no yellow question mark or exclamation mark before the network card, but in Control Panel/Network Connections/Local Area Connection, the network cable is shown as "un-plugged(X)", please check network cable/router/switch/modem/other network peripherals and network port, or plug network cable to other system for test. If the problem persists, use another computer in the same network environment to check if it can access internet. If the network is not connected to internet, please connect ISP and network peripheral reseller or change network cable.
4.3. If there is no yellow question mark or exclamation mark before the network card, but in Control Panel/Network Connections/Local Area Connection is disabled (grey), please enable(right click and choose "Enable") it for a test. If the problem persists, please turn off firewall, search and kill virus, reinstall OS and drivers. If the problem still exists, please contact reseller (service center) for tests.
4.4. If there is no yellow question mark or exclamation mark before the network card, but in Control Panel/Network Connections/Local Area Connection is shown as "Limited or no connectivity" (yellow exclamation mark)", please do some troubleshooting as the following steps:
4.4.1. Right click and choose "repair"
4.4.2. Unplug and re-plug the network cable
4.4.3. Re-connect the network or access IP
4.4.4. Restart
4.4.5. Check server DHCP settings, IP configuration, seek advice from ISP
4.4.6. Skip router and connected to Modem directly
4.4.7. Turn off other computers in the same network to avoid IP conflict
4.5. If there is no yellow question mark or exclamation mark before the network card, and there is no abnormal situation in Control Panel/Network Connections/Local Area Connection, please do some troubleshooting as the following steps:
4.5.1. Try to access IP or Static IP automatically
4.5.2. Unplug and re-plug the network cable
4.5.3. Re-connect the network or access IP
4.5.4. Restart
4.5.5. Check server DHCP settings, IP configuration, seek advice from ISP
4.5.6. Turn off firewall, search and kill the virus, reinstall OS and drivers
4.5.7. Check MAC address ( You could follow the commands: " Start"-" All Programs"-" Run", please input " cmd", after that you could input " ipconfig/all" to check MAC address)
4.5.8. If possible, use another computer in the same network environment to check if it can access internet
a. If the network connection is OK in another system, please contact reseller (service center) for tests
b. If the network is not connected to internet, please connect ISP and network peripheral reseller or change network cable
click start control panel administrive tools computer management device manager scroll down network adapters + expand Ethernet driver if you see a yellow ? ! question or exclamation mark or red x means you need to install/update driver right click to install driver
the driver could be on the motherboard disk or the one supplied by your ISP internet service supplier or you might need to download it
http://download.cnet.com/%7Bvalue=http://www.download.com/network-pro-100-m/3000-2112_4-109029.html
http://download.cnet.com/%7Bvalue=http://www.download.com/network-3c905c-txm-ethernet/3000-2112_4-109004.html
hope one of these will help
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