"Network Cable Unplugged" Windows server 2003

My server keeps on telling me network cable unplugged , even though I have a network cable plugged in. I even swapped cables and network cards around and am 100% sure the cable is working. The server has been restarted several times. Any idea what could be causing this? I need urgent help please!
iamdieterAsked:
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JohnLoCommented:
did you change the port on the switch and or che3ck to make sure the switch is not bad?
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sumeshbnrCommented:
Go to device manage >NIC properties >advanced>linkspped /duplexmode try swapping the drop down to appropriate settings
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iamdieterAuthor Commented:
Have tried different link speeds but without luck. Have even swapped siwtches
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sumeshbnrCommented:
tried changing NIC?
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sumeshbnrCommented:
or boot with alive CD and check if OS have problems
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farjadarshadCommented:
firstly check the driver for your NIC then check your NIC and if the problem persist then try to terminate the cable from another switch.

For system restart kindly check the system for virus and maleware activities for this use following tools

1.Malewarebytes
2.superantispyware
3.spybot
4.Hitman pro's surfright

Antivirus
1.Symantec Endpoint
2.EsetNod32
3.Mcafee
4.Norton 360
5.kaspersky
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ChiefITCommented:
Download and install Service pack 2. SP1 has a coding problem that is misconfigured on the TCPIP.sys kernel driver. The MTU settings were incorrectly typed and you will periodically loose network connectivity.

Also, if this is Cisco equipment, make sure the Duplex settings are the same as your switch.
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iamdieterAuthor Commented:
All sorted now, just got connectivity back all of a sudden without doing anything. Very, very strange
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ChiefITCommented:
That's good news. Sometimes this can be caused by a nic flood. That's usuall indicative of a problem with the TCPIP.sys kernel driver. If that floods it will knock itself down and you will loose contact.

Duplex settings on cisco equipment
SP1 instead of SP2

Are usually the culprite on such a problem.
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iamdieterAuthor Commented:
Answer was good enough
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