How to figure out the compatibility issue between my mobo and ATI-5450

I was using a ATI-3450 PCI-e display card very well. I recently bought a new upgrade card from powercolor ATI-5450 512MB-DDR2. It even failed to POST in my mobo (ASUS A8N-VM CSM). The new card has been verified with another mobo flawless. I have upgraded the BIOS of my mobo to the latest one 1007. The PSU is 450W and the display itself have no need to apply any additional power supply and it's passive cooling design as well. What can I do?
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More about figure compatibility issue mobo 5450
  1. If you determined that the video card is fine and the PSU is powerful enough, contact Asus and ask them when a new BIOS fixing your issue will be released.
  2. Welcome to the forums!

    It also sounds like a BIOS issue to me.
    Unfortunately, Your Motherboard was released over four years ago and is a dead platform (socket 939).
    As such, I highly doubt ASUS will be releasing any further BIOS updates (the last update was in January 2007).
    I would recommend returning your new 5450 and saving your upgrade budget for a full platform upgrade.
  3. Thanks! :pfff: In Hong Kong, it is hard to request for refund if a product itself is working properly.
  4. It depends if you assumed that it would be compatible of if the reseller did. If they did, then getting a refund shouldn't be an issue.
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