Hi,

Firstly, When you phone has finally started go to this link and download, install and run Malwarebytes Anti-Malware Mobile.

https://play.google.com/store/apps/detai...

also if you have no anti virus installed you may wish to download, install and run Avast Mobile Security and Anti Virus.

https://play.google.com/store/apps/detai...

If they both pass with no problems reported, then back up all your data. Scroll to p53 in this link

https://www.manualowl.com/m/Huawei/Ascen...

and perform a hard reset to rectify your problem.

http://www.hard-reset.com/huawei-ascend-...

Warning:You will lose all your data and settings when you perform a hard reset that is why it is important to back up your data