So I recently just bought all my parts and tried building my computer today. The motherboard I got is the MSI z270 a pro. After assembling everything correctly, the computer boots up. The motherboard "Pro series" pops up on the screen, then quickly goes up to the message "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key". The problem is, when I plug in my mouse, keyboard, and flash drive (Boot device) to the usb ports on the motherboard, none of it works. I tried testing to see if the port died by putting in my phone charger, and my phone starts charging. I tried testing the usb ports on my front panel, and the same issue applies. Is there any solution to this? Or is my motherboard somehow fried.