Cant set my hd 7750 as primary video

Hello everyone, i have a mobo asus m5a88-m with a integrated hd 4250, but now i just bought an asus amd radeon hd 7750 but my pc still booting from the integrated one, i look on the bios but cant find what option i need to change to boot my external gpu, can someone help me?
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  1. Do you have the monitor plugged into the 7750? Integrated GPUs disable automatically when a dedicated card is installed.

    You could of course read the manual that came with it but I guess I'll do it for you.

    Go to
    Advanced/chipset/internal graphics.

    If you'd like to see the images they included to help you, again, read your manual
  2. Do you see the 7750 in device management? Is it recognized?
  3. noidea_77 said:
    Do you see the 7750 in device management? Is it recognized?


    Thank you for respond, nope only appear the integrated 4250...
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