Question about Dell Dimension 8400 PC Desktop

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Motherboards Dead? I have a Dell 8400 Dimension. I took a motherboard out of my PC, then I did put it in a new case, but it did not fit, so I did put it back where it was. Then, I turned my PC on and there was a Dell loading, but it stopped loading and then, it popped up saying Dell BIOS failed and try to contact with Dell Technical Support. I only take a part out is hard drive, memory card, video card, and power supply. So, what did I do wrong? Please, help me to fix this problem. Thank you.

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Check to make sure the hard drive cables are connected properly and securely. Make sure all your cards are seated firmly and properly. Take the cmos batter out for about 30 seconds and then place it back and make sure it is firmly seated and in the proper position. If this still does not help please let me know for further help.

Posted on May 27, 2008

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Dell dimension 8400 pc desktop when pressed power botton orange light comes on and system not booting up


Needs attention from a tech. Could be anything at this point, bad ram, bad/dirty ram slot, failing power supply or motherboard, bad video card... I'll put my money on bad motherboard otherwise I hope you would have wrote that you are hearing beeps. Hope that helps you some.

Aug 10, 2014 | Dell Dimension 8400 PC Desktop

1 Answer

My 6 year old Dell Dimension 8400 quit working completely.


Depending on the symptoms, you may have different faults.
http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell
Flashing Amber power LED, normally power supply
AAGG Diag LEDs normally bad RAM
Solid Amber Power LED, bad motherboard or Expansion card connected to it.
If you need a motherboard a Precision Workstation 370 motherboard is essentially the same and is available, (8400 motherboards are scarce)
http://shop.ebay.com/i.html?_kw=T7787&_kw=DELL&_kw=Motherboard

Feb 05, 2011 | Dell Dimension 8400 PC Desktop

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Best motherboard that will fit the case of my Dell 8200 PC. I want more ram and maybe upgrade the processor.


The best MB for that chassis that will fit without any Modification is a Dimension 8400/PWS370 Dell Motherboard. The chassis power button/USB connection is a proprietary Dell connector and using any 3rd party MB will require modification and the wiring is almost impossible to find for that control board.

For just about the same cost (MB, Processor, Heatsink/Fan and RAM) you can buy a New Vostro 220 with a Core 2 Duo processor w/3GB RAM and a 320 GB HDD and it is under warranty

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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

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1 Answer

Compatibility


Not without major case modifications. Dell uses Dell specific rather than industry standard motherboards on all their systems except the newest XPS line. Sorry.

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it seems *********** board is having problem plz send it for servicing

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8400 tower case Broken


You can search it on ebay website for that.

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