I think someone said if you get it into ap fastboot mode. Its the mode you need to be in to connect it to the computer. Whats your phone doing now? You might as well try to do the matt utility thing. I don't know if you have any other choice.
I got into AP Fastboot. I did the power vol + vol -. THen did the vol + and Vol -. Then did the BP Tools and nothing. Matt's utility won't work because it says my battery is low