According to the only information that I can find on your computer it was released in 2006. If this is correct, the GTX 750 Ti will not work. This card requires UEFI in the motherboard instead of a standard/Legacy BIOS. HP didn't begin using UEFI until mid-October, 2012. The BIOS can't be upgraded to UEFI. The last cards to not require UEFI were the GTX 660/670 series.
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