Cant flash anything in fastboot remote error:0x30000 HELP!!!

[Samir_Delic]

Hi guys.Few days ago i noticed that some process of android system is crushing just like one month ago so i decided to install android revolution hd rom because last time i did that it solved my problem.I installed rom but then problem started.When i tried to flash boot.img it said:cant flash boot.img(remote:err 0x30000).I cant access recovery too.It stops at htc logo screen.when i try to reflash recovery it says same thing as for the boot.what should i do? ?i cant do anything but i can access fastboot and bootloader and my pc DOES recognize my phone.HEPL PLEASE