I assembled my own PC and since the day I had it, whenever there was a USB drive or external harddrive connected to the USB port (no matter which one, I've tried all 8 of them in fact) the computer will not go pass the BIOS screen. I have an ASUS motherboard. Any help or suggestions please? I've looked into BIOS and I didn't see anything related to that. My startup sequense are CD-ROM, then my internal hard drive.