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i would test it on another Os, like a live knoppix cd, to check if it is ok or not :<br />
<a href="ftp://ftp.uni-kl.de/pub/linux/knoppix/KNOPPIX_V5.1.0CD-2006-12-30-EN.iso" rel="ugc">ftp://ftp.uni-kl.de/pub/linux/knoppix/KNOPPIX_V5.1.0CD-2006-12-30-EN.iso</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Knoppix &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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i would test it on another Os, like a live knoppix cd, to check if it is ok or not :
ftp://ftp.uni-kl.de/pub/linux/knoppix/KNOPPIX_V5.1.0CD-2006-12-30-EN.iso [ftp://ftp.uni-kl.de/pub/linux/knoppix/KNOPPIX_V5.1.0CD-2006-12-30-EN.iso]      Knoppix      

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It looks like the onboard NIC is break down / damage ...... no choice, if want to repair replace the motherboard is the way to go ...... Or you just plug in the PCI / PCIe NIC in order to save the cost ..... Good Luck !!
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It looks like the onboard NIC is break down / damage ...... no choice, if want to repair replace the motherboard is the way to go ...... Or you just plug in the PCI / PCIe NIC in order to save the cost ..... Good Luck !!

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we are using intel motherboard s975xbx2.<br />
the problem is that when machine boots up. Gigabit NIC does not show up in network connections though in the device manager it shows up, in properties it says there are no issues with hardware.<br />
apart from built-in NIC, we have got 2 external gigabit NIC's which are working fine.<br />
<br />
rebooting doest help either<br />
it shows up sometimes after complete shutdown of the system, but again goes off with the next.<br />
<br />
what could be matter with inbuilt-nic?<br />
have tried updating driver but no use.
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we are using intel motherboard s975xbx2.
the problem is that when machine boots up. Gigabit NIC does not show up in network connections though in the device manager it shows up, in properties it says there are no issues with hardware.
apart from built-in NIC, we have got 2 external gigabit NIC's which are working fine.

rebooting doest help either
it shows up sometimes after complete shutdown of the system, but again goes off with the next.

what could be matter with inbuilt-nic?
have tried updating driver but no use.

onboard nic not detected

Components are those devices that are internal to a computer -- the PC boards, the central processor (CPU), the memory (RAM), disk and video controllers and so on.

Components

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.