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I have a Dell Inspiron 710m. I was running on batteries until I noticed that it was running low. I plugged my A/C adapter to recharge the battery but noticed that the pilot lamp of the adapter was not lit. The battery did not re-charge as well. When I removed the adapter from the notebook, the pilot lamp lit. Could this be just a simple failure of the power supply adapter or something in the laptop? I would appreciate your help. Thank you.

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Seems to me like an AC adapter problem. I think your adapter output power has degraded to a point that it no longer provides enough power to run the laptop & charge the battery at the same time.
I recommend that you refer to the following article for diagnosing the problem & fixing it:
http://www.fixya.com/support/r6395191-troubleshooting_laptop_power_failures_ac

Posted on Mar 28, 2011

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