Hi, I just built my first computer and it seems like everything is running smoothly. The only problem is when I plug plug in my external hard drives. I have a external 2.0 hard drive and 3.0 hard drive. When I plug them in, my computer keeps making the USB unplugging noise and my computer wont recognize that they are plugged in. I have a usb keyboard and mouse plugged in and they are running fine with no problems either.