Apps phone doesn't boot (can only get to fastboot USB menu)


i can only access the white screen when i chose bootloader>recovery i get the /!\ sign.
i installed the USB driver and i was able to use only the "fastboot" commends. adb commend didn't work. when i type fastboot devices i get the serial no. of the device. but when i use the "adb devices" commend i get: "List of devices attached" and an empty line.

is it possible to fix this phone? thanks in advance.