Upon startup if any usb devices plugged in - pc doesn't detect hd.

Apologies if this is a duplicate thread. I've searched off and on about this issue.

First off, I have an Asus P5Q Pro Turbo mobo. My case is a Coolermaster Gladiator if that makes any difference.
Any time I accidentally leave, for example, my printer's usb cable connected and turn my pc off - when the pc is turned back on it will automatically bring up a message about the hard drive not being detected or boot device needs to be selected. When I look into Asus bios, it seems to switch around to highest priority whatever is connected in the usb ports (whether in the front or back of the case) and leaves the hard drive out. Once every usb port cable is unplugged it goes back to the correct sequence I have set up. I was wondering if this is a bios issue that can be fixed or maybe a possible jumper issue?
(I'm a noob, unfortunately. Also this is my first homebuilt computer.)
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More about upon startup devices plugged doesn detect
  1. Would it help to remove usb devices from the boot sequence? (in bios)

    Flash to the newest bios?
  2. I'm going to check to see if I have the latest bios already. Thanks for the suggestion.
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