Question about Dell Dimension 8400 PC Desktop

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Replaced Motherboard HELP

I have a dimension 8400 that needed new mb. Replaced that and the problem i had was corrected, however, the new mb doesn't recognize the hard drive tried making changes in bios but still nothing.

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  • michscha Nov 19, 2007

    Don't see it in the Bios, it is a SATA hd have checked the cables. Haven't changed any jumpers, It has the original OS on it from dell was thinking it has something to do with that but not sure how I would get around it because while trying to do a clean install from different xp pro cd but it doesn't find hd after booting from cd either

  • michscha Nov 20, 2007

    still no luck here i have reset the bios, I did a bios flash with correct version. that helped that the diagnostic lights on the back say the hd is there now but still will not find it in bios or while trying to install xp

  • michscha Nov 20, 2007

    Choices under sata operation are

    Raid autodetect/ahci

    raid autodetect/ata

    raid on

    combination



    I know the hd is good cuz i hooked it up to a different computer and it was found.

  • michscha Nov 20, 2007

    Im starting to think the motherboard i recieved is junk

  • michscha Nov 20, 2007

    No not using raid and ive tried it on the combination setting which says its for sata pata settings

  • michscha Nov 21, 2007

    The motherboard is u7077 bought online oem part

    Dell Dimension 8400 A09 System BIOS Gotten off dell website for flashing. The Sata cable is fine i used it when i tried hd in different computer. Hard drive is getting power can hear it trying to run when it is plugged in it just spins and does like a click like it has no idea what to do. Stumped here thats forsure unless its a bad motherboard

  • michscha Nov 21, 2007

    Hi again yep i have tried all the sata connections so im callin the company today and having them send me another motherboard. Hopefully with luck that will take care of this nitemare lol... Thanks for all your help

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Have you looked into a third party driver? also alot of the time...you have a secondary bios if you will, that exists outside of your normal bios that you would/could use to setup your sata drive.......hope that helps

Posted on Dec 11, 2007

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Try resetting the BIOS with mobo jumper

Posted on Nov 20, 2007

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So the HD is not recognized at all or do you see it in the BIOS? If you don't see it at all then obvious things to check are the power cable, and the IDE or SATA cable. If it's an IDE drive it's not too difficult to bend a pin while attaching the connector. I would check that. I'm guessing you did not change any jumpers on the drive. Last thing I can think of is to be sure the BIOS settings are correct depending on if it's an IDE or SATA drive.

Posted on Nov 19, 2007

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  • ohiotom Nov 19, 2007

    I really think the problem is a setting in the BIOS. I don't have a DELL 8400 so I can't tell you where to look, but there are different modes you can choose from with respect to SATA and PATA. I would just experiment with them to see if you can get the motherboard to recognize the SATA drive.

  • ohiotom Nov 19, 2007

    Just a bit more information for you. I rebooted the system I'm using here and found the SATA/PATA settings under IDE Configuration. You can choose from SATA, PATA, or SATA+PATA on my BIOS. I need to run SATA+PATA because I have SATA hard drives and a PATA DVD drive.

  • ohiotom Nov 20, 2007

    Were you able to locate the IDE configuration in the BIOS. These settings are available to you even if there is not HDD attached. If you did find it, how is it configured? PATA, SATA, or SATA+PATA?

  • ohiotom Nov 20, 2007

    Are you using RAID? If not, you might try disabling it.

  • ohiotom Nov 20, 2007

    Maybe we should back up.



    You said you replaced the motherboard. What motherboard is in the computer now. Is it from Dell or somewhere else. What is the model number.



    What BIOS and version are you running.



    You said you know the drive works because you put it in another computer.



    In my mind that leaves the following things as possible problems:



    The BIOS settings, the motherboard itself (even though it's new), the power cable to the HDD, and the SATA cable to the HDD.



    Have you tried a different power cable and SATA cable?



    I know you're working hard to correct this and it's easy for me to keep saying the BIOS, but assuming the motherboard is good and the cables are good, that's all that's left.



    I would really like to know what brand/version of BIOS and motherboard you're using so I can see if I can find a document that covers all the BIOS settings.



    Thanks.

  • ohiotom Nov 21, 2007

    I found this website where some folks are discussing boot problems on the same machine as yours with an SATA drive. Here's the link:



    http://www.techspot.com/vb/all/windows/t...



    They recommend changing the SATA setting to "combination". Probably worth a try.



    I know I'm a broken record, but it's either the BIOS settings or the motherboard, and I'm betting it's the BIOS settings.

  • ohiotom Nov 21, 2007

    Just realized you said you already tried "combination". Sorry I did not see that before.



    Did you try all the SATA connectors on the motherboard?

  • ohiotom Nov 21, 2007

    Well good luck. Sorry we could not figure this one out. Maybe it is a bad motherboard afterall.



    The only other thought I had is maybe there's a motherboard jumper that enables/disables the SATA interface.

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