Can't enter fastboot or recovery TWRP blinking

Hi, i'm having troubles trying to fix my tf300t. I can't enter in recovery mode or fastboot to flash anything. The problem started when i performed a factory reset from the rom.
I can't even turn it off, it keeps blinking in teamwin's logo screen until battery is gone. I don't know what to do..
ROM: CM12.1
Recovery: TWRP 2.7

Thanks