CUH-1004A No video signal

someone can help me please
i have a exfat usb 3.0 with 64gb and only this at root : The bzImage, The initramfs and psxitarch.tar.xz
i launch kexp and linux loader in 1 min got black screen no video signal and blue led wth purple tilt. 
help please i have an old fat ps4 CUH-1004A