Question about HP Compaq nc6400 Notebook

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Laptop Powercord Problem

I am running a HP nc6400 with a intel Centrino Duo processor. When I plug in the power cord, the cpu usage according the the taskmanager goes from 0 to 100% and everything is really laggy. When unplugged it runs perfectly fine and the cpu usage is usually at 1%. What is happening?

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There is a virus infection you need to scan system and have to check the power cord plug in a fix plug no sparking at all should be there.

Posted on Mar 03, 2009

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My Dell C840 Latitude has a 1.8Ghz processer but when I checked system it says it's only running 789 Mhz. Is my processer going bad?


Go Into Control Panel, select Power Options, and change Power Scheme from Laptop/Laptop to Home/Office Desk. Make sure you have AC Adapter plugged in and your should now be using all of CPU. Check System icon from Control Panel to confirm. CPU usage may show as less when laptop is booted from battery power only.

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My hp compaq nc 6320 is running at 987mhz


I believe the Centrino Duo steps the processor down to save energy when unplugged. Try restarting the computer with it plugged in (if it isn't plugged in now). You might be able to change or disable this function in the power management program if this turns out to be the issue.


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Slow Cpu speed


Check in the BIOS to see what processor is rated at (upon power-up of laptop hit F2 key to enter setup menu). Depending on what model Centrino you have, the speed rating should be at around 1.2 GHz or better. If speed checks out in the BIOS then run diagnostics on laptop to see if the motherbrd has a bottleneck issue. To do this, hold down the <FN> key and then push the power on button. Problem could be either your processor or motherbrd.

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