My zotac GTX 750 graphics card beeps or is incompatible with my lenovo pci 2.0 motherboard, I believe that is the proble. However I see others with similar questions ("If I buy a pci e 3.0 card, like a hd radeon 7770, would it work with my pci e 2.0 motherboard? I know if it does work then it still won't work as well as if I had a 3.0 motherboard, I'm just wondering if it's possible for a 3.0 card to work in a 2.0 motherboard.") and answers suggest it should or may be compatible. Should I shop for a pci 2.0 graphics card or is it compatible with my lenovo pci 2.0 motherboard.