So i recently built my new pc, and i'm unsuccessfully trying to install windows 7 through USB["unable to find drivers" during install]. I looked it up and it said that if i switched the SATA mode to IDE it should work. However, when i go into the SATA configuration, the only option i'm given is AHCI. I'm using an MSI B150 Gaming M3 motherboard. Help please, thanks in advance.