Phone stuck in shutting down screen

A

AC Question

Hey there. I have a Huawei p7, but lately it has startet acting up. When i try to turn it off, it just goes into the ''shutting down'' screen but it never turns off. It stays like that until i force it to (by press and hold the power button) or until the battery dies... so it is basicly not possible to do a normal factory reset. I made a hardreset by holding down power and volume butten down while phone is off. The reset was successfull but the problem is still there... Also apps take about 5-10 minutes to start up (it did this before and after the reset as well)
Is this something that i can fix by my self without the knoledge of programming or should i just throw it as far away as i can and get a new one? :D