I just got my 1st set of bitcoins onto my computer now I am moving them to a new place its is saying that the coins are not there what is going on

I need to by 13 bitcoins and fast going to be on to night and part of sunday I have a paypal   

Ok I am new at this names jay just testing the waters out right now and need to know how this all works if someone could help me that would be great

can someone tell me what to do to get on the silk road