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Laptop (Windows 7, Sony Vaio) automatically shuts down, retarts and then after a minute shuts down, restarts etc in an endless cycle when the ethernet cable is plugged in.

When the cable is removed or LAN adapter is disabled, no problem.

The problem still happen in safe mode with networking.

I tried disabling and re-enabling the adapter, deleting and reinstalling the driver, disabling auto restart after crashes, system restore (didn't work), restoring to the last known good configuration. Nothing helped.

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    I assume this doesn't occur when you're on wireless? Try a Windows repair
    – Dave
    Apr 5, 2013 at 11:38
  • Also, do you mean that, if the LAN adapter is disabled you can plug the cable in and it won't restart?
    – Dave
    Apr 5, 2013 at 11:50
  • This sounds like hardware failure on the lan device itself.
    – Ramhound
    Apr 5, 2013 at 12:03
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    Yes, if the LAN adapter is disabled I can plug the cable in and it will not restart.
    – reader
    Apr 5, 2013 at 12:40
  • What is Windows repair? Thank you.
    – reader
    Apr 5, 2013 at 12:41

1 Answer 1

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This reads like a fundamental driver error.
But to make sure if it's a hardware or a driver failure, you can try a Linux Live-CD (e.g. Kubuntu) to test if it's really an error in the Windows driver (because Ubuntu has a different driver).

  • If the error persists running Ubuntu, it's a hardware failure.
  • If not, it's a Windows driver failure.

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