El Capitan USB problems.

Hi. I am trying to install El Capitan on my system. The system has a Acer oem g41 express motherboard with a pentium, 3gb ram and a 750ti. The installer loads fine but no USB devices work. No USB ports work and I have tried switching the usb connected from usb 2 to usb 1 but that also didn't work. I have tried literally every next I can find and none worked. Any help is greatly appreciated. Thanks.

submitted by /u/TheHoneyBear333
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