Default Fastboot without volume buttons

Hey all. Ok. Got my Oneplus end of last week thanks to an invite from @playya here. After doing initial set up and allowing updates to install on phone, I quickly noticed the volume keys do not register. I am thinking it is a hardware issue and have submitted for RMA with OnePlus, but I have not even heard anything from them yet after 6 days.

I want to see if maybe it is just a ROM/software issue though and see if I can re-flash, but how can I even get into fastboot as volume down does not register at all. (Or volume up for that matter).

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