Question about Dell Inspiron 6400 Notebook

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My dell inspiron notebook 6400 shuts down and starts up automatically...what is going on...I don't use a battery so its not that...just use the ac

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  • Dell Master
  • 5,660 Answers

By your description it sounds like your laptop is overheating. Many a laptop faces this issues because the Air Intake Duct is dirty, and the internal hardware.

When a processor in a computer becomes too hot, it shuts off. (More specifically BIOS turns it off) NO processor running, NO computer.

Since the opening for the Air Intake Duct, (Left front side), is on the side close to the bottom, it makes an excellent(?) location to 'inhale' foreign debris. Dust/Dirt/Hair/Food Crumbs/Lint, you name it.
When this foreign debris goes inside the Air Intake Duct it clogs it up, dramatically reducing the cooling efficiency of the cooling system.

The Air Intake Duct is connected directly to the System Fan, and this fan blows air through the Cooling Tube for the processor, and graphics.
The Cooling Tubes, One for the Processor, One for the Graphics), is about the width, and height of your little finger!

Solution?
Use a can of compressed air for computers, and blow out the Air Intake Duct. (AC adapter removed,{Charger}, and battery removed)
Do NOT blow out the Exhaust Duct!

Use Short Bursts of air, not Long bursts.
You will be blowing air directly on the System Fan. This fan is only designed to spin so fast. Spinning it faster than it was designed for, can lead to premature failure of the fan's bearings.

Take a look at this,
http://support.dell.com/support/edocs/systems/ins6400/en/sm/compnts.htm#wp999507
See Number 12? That is the Processor Thermal Cooling Assembly. The copper colored S-shaped piece is the Cooling Tube.
Number 14 is the System Fan.

This is the Service Manual main page,
http://support.dell.com/support/edocs/systems/ins6400/en/sm/index.htm

Would appreciate it if you would rate my answer.

Posted on Jul 19, 2009

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Can I use the DELL Inspiron 6400 without the battery and its charger? If so, how do I safely remove the battery ?


Without BOTH the battery AND the charger, the only use for your computer is as a door-stop. :-)

Yes, the battery can easily be removed.
Turn the computer off.
Disconnect the AC power.
Flip the computer upside down.
Look for a "lock/unlock" button or slider.
Move the button or slider to the "unlock" position.
Carefully and slowly turn the computer right-side up,
and the battery should easily fall out of its socket, hitting your foot.

Reconnect the AC power, and start-up the computer.

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Hi,
1. Shut down the system, remove the battery and the Ac adapter from the computer.
2. Press the power on button for 10 seconds
3. Reinsert the battery
4. Power on the computer and as soon as you see the dell logo press the f2 key a couple of time
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6. Otherwise shut down the computer reconnect the ac.adapter and check if the problem is solved

Also the battery has a diagnostic lights on it , remove the battery from the computer and press the button on the battery a set of lights would glow. If they are steady and come in a series the battery is good , If some lights are missing the battery is bad and may need replacement

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