Question about Dell Dimension 8400 PC Desktop

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Dell Dimension 8400 Start up Fan Noise

Hello i have a dell dimension 8400 - when i go to turn the desktop on it starts up normal for the first 2-3 seconds then the fans start up very loudly. i have cleaned the fans, and anything else i could see that had any kind of dust/dirt build up. checked the wire connections. i cannot see any kind of damage to anything inside, nothing burnt or melted. after the fans kick in the computer does not boot. However if i go the fan near the heat sink and press inward on it the pc boots up fine and works normally. Is this a fan issue or a cpu issue? or something else?

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Might be a hard drive issue. I had the same problem with one of My desktops. I replaced the hard drive and it worked fine.

Posted on Jul 01, 2009

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Its seems it an fan issue make sure the fan is in contact with the heatsink and cpu if cpu over heats it wont boot the system or contect dell support for the same

Posted on Jul 01, 2009

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1 Answer

Dell Dimension 8400, I changed battery, now it shows Press F1 or F2 on start-up. If I press F1 the computer boots up, but how do I get back to a normal start-up?


Hello there and welcome to fixya
First off you need to be in bios then change the dateand time correctly in order for it to continue then oncethe date and time has been changed then press the f10 to save THIS IS WHERE PEOPLE MAKE MOST OF THIS MISTAKE THEY DONT SAVE IT TO BIOS BY PRESSING THE F10 KEY THIS WILL SAVE IT TO BIOS AND IT SHOULD RESTART THE COMPUTER ON ITS OWN
AND EVERY THINGS SHOULD START AS NORMAL

Mar 24, 2013 | Dell Dimension 8400 PC Desktop

1 Answer

Set up cd rom dell dimension 8400


Hello Download drivers here at dell:

http://www.dell.com/support/drivers/us/en/19/Product/dimension-8400

The drivers can be downloaded one by one.

You maybe need to unzip the file before you install.

Here is only drivers for win xp.

You can`t download a setup disk but you can call dell support
to order the software from them (if they still have it) by the service tag.

Good luck

Dec 02, 2012 | Dell Dimension 8400 PC Desktop

1 Answer

DELL 8400 MAKES A LOUD FAN NOISE AND WONT BOOT


There are 2 basic fans in Dell tower one for the power supply and the other for the Processor. If your computer is not booting then the Processor fan is most likely to be the culprit. What could be happening is that the Processor fan is no longer turning fast enough to cool the processor, so normal the processor when it over heats there is either protection to switch off the computer automatically or the computer won't boot. The best thing is to change the fan and make sure it is working properly but checking on the cables that they won't entangle on top of the fan to impede it's movement. You can easily damage your processor if the fan is not working properly.

Oct 18, 2011 | Dell Dimension 8400 PC Desktop

1 Answer

At boot up, fan speed goes very very fast with high pitch noise and hard drive does not start. ant suggestions? Thanks.


1) Clean the fan. There must be a lot of dirt.
2)Check if the SMPS is working fine. Check it with a tester.

Nov 27, 2009 | Dell Dimension 8400 PC Desktop

1 Answer

Dell dimension 8400 will not start.


no man try to take out the modem ( last pci slot on the botom of the board) and see if you have any luck if not you going to need a new motherboard thanks and good luck

Oct 11, 2009 | Dell Dimension 8400 PC Desktop

3 Answers

Dell 8400 runaway fan no diagnostic lights and very ocassionally it starts normally


Which fan?, the cpu fan or the cpu fan?

Most Dell pc come with a below average power supply. I recommend replacing your power supply with a better one. Do a search on Google for a good replacement power supply for you Dell 8400.

Please rate response.

Feb 17, 2009 | Dell Dimension 8400 PC Desktop

1 Answer

Dell Dimension 8400 PC won't boot


http://www.computerhope.com/beep.htm

Here's a list of Boot Codes .....start with one stick of Ram

May 24, 2008 | Dell Dimension 8400 PC Desktop

4 Answers

Woes with Dell


If the power light is steady amber, a device might be malfunctioning or incorrectly installed.

Disconect fan , see if it starts.

Jan 13, 2008 | Dell Dimension 8400 PC Desktop

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