Question about Dell Dimension 8400 PC Desktop

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Dimension 8400 hard drive won't boot.

I have an 8400. Hard drive won't boot. Connector P-7 is floating it extra or where does it plug in. Is that even the problem?

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  • thomas_hughe Jan 13, 2009



    I too have the very loud and cycling fan when I start the 8400. After looking at comments by many others on this site this certainly looks like a Dell-8400 design problem connected to the failure to boot.

  • thomas_hughe Feb 09, 2009

    After some additional poking around I determined that HD was OK and all data was still there. I have concluded that it is a S/W problem. I have not yet reloaded the OS but that is the next step. I hope that solves the problem.

    FYI...this all started when one of our geeks at work loaded an Activcard driver to provide required security for doing work remotely. PC has never worked since and still does not work. If I can ever get it working again I will also deinstall the Activcard driver.

  • Jason Edinger May 11, 2010

    That is for a floppy drive. So no, not a problem. Are there any beeps when you turn it on?



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If hdd doesnt boot, there are lot of issues which add up to it, note the four small led's on the back of your comptuer and post them here, resrtart the comptuer and when you see the dell logo, keep tapping f2 on the keyboad, sys will boot to sys setup, under the option DRIVES, check if you are able to see the hard disk listed, restart the comp on dell logo, keep tapping f12 and then you would see boot to utility partition, highlight it using kybd arrow keys and hit enter, then you would see TEST SYSTEM, then run the express test, to make sure that your hdd is working fine, if it reports any error messge, it will display another message with it, note down the message and go to and check which h/w needs to be replaced, if no error message appears, then the issue is only OS related, reinstall the OS issue is resolved,,


hope you would try all these steps before purchasing a hard drive

Posted on Feb 07, 2009

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Hi, There should be two connections to the hard drive, the SATA power and SATA data. In a dell the data one is blue and the SATA power is black. Make sure they are both connected. If they are not, then connect them and try starting your computer.

If they are already connected then it may be that the operating system is messed up or the boot flags. In this case you need to find the original install CD that came with your dell. It is the one with operating system written on it. Start up from this disk and run install it.

The only other option is that the hard drive is broken.

In your case, its probably best to check the connections and try and find the disk, if you don't have it then you will have to get a PC repair guy to look at it.

Hope this helps. If you need help installing from the disk just let me know and i will be happy to help.

Posted on Jan 13, 2009


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