[REQUEST] Enable onboard radeon 4250 on Acer Aspire X3450 for Crossfire with 5570..

[amijim]

Hello.\i would like to ask  for a mod in my Acer X3450 as to enable crossfire .It seems that the onboard radeon 4250 is disabled in bios when i install my radeon 5570 and while i am happy with the performance i would like a little more boost by enabling the onboard gpu.Can a bios guru help me out on this?You can download the bios from the official acer site.thank you .
https://www.acer.com/ac/en/GB/content/su...t/3734?b=1

[BlueSkyYGO]

These graphics are from different architectures so they don't do Crossfire, Radeon series 3000/4000 are DX10.1 and Radeon series 5000 are DX11