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I have one PC that has a solid amber led light on the NIC where it should be green. The PC can access the internet fine but can't ping a specific host on our network. The host she can't ping CAN ping the PC with the amber led. Any ideas on what could cause this?

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migrated from serverfault.com Apr 27 '11 at 18:52

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What does the amber LED signify? Link speed? Duplex setting? –  joeqwerty Apr 27 '11 at 18:39
    
Most likely that it's connected at 10mbps (or 1gbps if it's a 100/1000). That it's different indicates that it's failing autonegotiation. Try a different switchport, if it remains, the NIC may be faulty. –  draeath Apr 27 '11 at 18:45
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If you can ping WAN but not LAN you may be on the wrong subnet. –  Chris Nava Apr 27 '11 at 19:18
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The fact that the ping works in one direction shows that you have connectivity, which means the problem is either with name resolution or likely with the firewall on the machine you are trying to ping. Are you pinging by IP address or hostname ? If pinging by hostname is not working, then try pinging the IP address - if this works then you know you have a name resolution problem. Can other machines on the network ping the machine she cannot ? It may be that the machine has a firewall configured that blocks ping requests. Please provide IP details (ipconfig /all) for both machines if you are st –  Jon Reeves Apr 27 '11 at 20:47
    
there you go @JonReeves, welcome to Super User! :) –  studiohack Apr 27 '11 at 21:21

1 Answer 1

If you have an amber light and a yello light on the nic, completely powerdown the comp, remove power plug, hold the power button for a few seconds to drain the comp of power, reattach cord and power up. The reserve power in the comp is keeping he nic from "resetting" and recheck your nic settings then.

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What?? Really?? –  lornix Jun 20 '12 at 16:16

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