Default HELP Htc one att phone lots of problems !!

http://forum.xda-developers.com/show....php?t=2685284

please read the bottom part of what i wrote in the thread ,, basically i went back to 4.3 and it worked and fixed the mms but it took away my 4g so i thought it was easy enough lets try the 4.4 version of that rom and maybe have the bes tof both worlds and now as u read i cant do anything , but get into bootloader but anything i try goes back to a frozen htc screen , it will go to recovery it will show cwm for a few seconds go blank and back to htc screen frozen , i cant sync to the computer , but i can power down and charge it please help , thanks so much for the help