You computer is circa 2011, and has the old BIOS called Legacy. It can not be upgraded to the newer UEFI v BIOS which any card manufactured 09/2012 and later would be UEFI. So, you can not use it. The last know card to work would be the GTX 660, and that requires a 500W PSU. These are out of your price range.
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HP Envy 8 5010 Tablet (2) HP DV7t i7 3160QM 2.3Ghz 8GB Printer -- HP OfficeJet Pro 8620 Legal Custom Asus Z97D, I7-4790k, 16GB RAM, WIN10 Pro 64bit, ZOTAC GTX1080 AMP Extreme 3 fan 8GB RAM, 500GB SSD, Asus PB287 4k monitor, Rosewill Blackhawk case and 750W OCZ PSU.
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