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Laptop power adapter uses 100% CPU

Discussion in 'Hardware' started by wet26, Apr 7, 2009.

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  1. wet26

    wet26 Thread Starter

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    Apr 7, 2009
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    This is a recent problem - a previous adapter broke and now subsequent adapters use 100% CPU and sloooow my laptop.

    It's an hp 6720s 13 months old, XP Home, HP 65W power adapter.

    Laptop running fine on battery only. Laptop runs fine when battery removed and power adapter is connected. Laptop does not run fine when battery and power adapter connected - 100% CPU.

    Also, the charge indicator light no longer works and the power icon does not show that the battery is charging, although it is.

    I've updated the BIOS, restored factory power settings and tested the power adapter during startup and have the same prob with the CPU usage.

    What could cause the power adapter to use 100% CPU? Please let me know if you need more info, cheers.
     
  2. dustyjay

    dustyjay

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    Jay
    Is this an Adapter obtained from HP as a direct replacement for the proper adapter as shipped from HP with the laptop?
     
  3. ibizagreg

    ibizagreg

    Joined:
    Mar 15, 2008
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    A friend of mine had exactly the same problem after he bought a replacement adaptor direct from HP, his solution to the problem was to buy a second hand original adaptor from ebay.:cool:
     
  4. wet26

    wet26 Thread Starter

    Joined:
    Apr 7, 2009
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    all with the same result.

    This is an original HP adapter which I obtained from HP. I also tried an HP adapter from ebay, and a replacement adapter from another shop. All the same problem. I'm thinking something has been damaged internally, but I don't know what...
     
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