Default Can't get into TWRP Recovery

So I was on my TWRP recovery and I wiped Dalvik cache and all the other things that I was able to wipe while I was on the TWRP recovery and now my phone won't boot up. It is stuck on the white screen that says, "htc powered by android"

I assume that I probably wiped the os and everything. I can't get access to the TWRP recovery now what do I do?