Question about Dell Inspiron 6400 Notebook

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Dell inspiron 6400-runs slow on AC power but not on battery

Hi , i am using dell inspiron 6400 for last 1.5yrs. since last week, system -application responding very slow when A.C. plugged in. my battery is not lasting more than 10mins. but when i remove battery and try , still same problem, applications responding very slow. booting/shutodwn also taking too much time on AC power. but if i boot/shutdown system only on battery power then it behaves normal(fast) and even applications repsonds normal.
please help. as i am not able to use my laptop since last week.
can't i run laptop only on AC adaptor ?. help needed.
i purchased a new battery from DELL. i formated my hard disk and installed OS again. but still the same problems persists. when i am working on battery, computer is working fine(fast), but when i connect AC power(charger), then the computer immediately becomes slow. applications work but responds very slow. and if i switch of charger, then immediately all open applications run normal. can you please help.,,,

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  • nicole_y2000 Feb 09, 2009

    Hi,

    I have the same problem, when plugged in the CPU usage runs at 100% making it impossible to run any programs or start the machine at all.

    I don't have any Dell enegy managment installed as I formated the computer 5-6 months ago.

    Please help it drivin me crazy!

  • gattu Feb 10, 2009

    as i dont have any energy mgt software installed (as i formatted hard disk and installed only OS ) and still facing same issue, how can i resolve issue of converter board - heating up ..do i need to use any cooling fan ? please help

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Having an identical issue with DELL Precision M6400.
Normal operation on battery and degraded performance on AC, CPU usage on 100 % even Task Manager running on 60 % usage. re-installed the OS and Installed/uninstalled the dell power management utility ( latest drivers,BIOS A09 ect), did not help.

Got DELL to swap out the mother board and graphics card, no changes ( even tried another adaptor from an identical machine).

does the converter board reside on the motherboard or is it a separate componet that can be replaced?

Posted on May 12, 2010

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If you want to fix the issue quickly, try the Dell speed up solution available here: http://www.speedupslowdell.com/ Hope this helps!

Posted on Jun 23, 2012

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Uninstall any energy management software provided by dell and then check.if the issue is not resolved then the issue is with the converter board as it is heating up.

Posted on Jan 29, 2009

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SOURCE: dell inspiron 6400 system responding very slow on ac adaptor

can i run my dell inspiron 6400 only on AC adaptor?

Posted on Jun 25, 2009

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