Hd 7750 gpu wont work on my lenovo h520s. i have a pentium g2020 2.9 ghz, a 300w psu, and a 10093 mobo. i downloaded the drive

Gingrr638

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Feb 2, 2014
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i have a lenovo h520s with a pentium g2020 and a 300w psu and im trying to install a hd 7750 for my pc. i have a 10093 mobo. ive downloaded the new drivers online and even disabled the old intel onboard graphics. when i put the gpu in it wont even detect the card on my computer. the screen just says no signal. am i doing something wrong?