huawei software installing do not unplug usb or press any key

[Android Central Question]

Hello, I accidentally click the side buttons of my Huawei 5X device and then on the screen it shows EMUI Huawei software installing DO NOT unplug usb or press any key. I don't know what happened. It just stuck at 0%. If I pressed the power off button, it only shows a warning "Warning: Power button is long pressed, please release to avoid system crash". Can you help me with this, please please please......

 

[Rukbat]

You probably have to reflash the ROM, but I'll move this to the Huawei section for you to get more traffic from people who have experience with Huawei. The Huawei 5Xsection at XDA Forums would also be a good place to look for help.