How to connect iPhone 5 to Windows 10 PC

I can not see my iPhone   5 when I connect to Windows 10 PC, which worked before.
I realize I need to download iTunes
1) Go to www.apple.com/itunes
2) Download iTunes6464Setup.exe installer and install
3) restart PC.
4) Connect iPhone to PC

1. Trust this Computer? will appear on your iPhone. Click Trust.
2. 'Do you want this computer to access your iPhone?' will appear in Windows. Click Continue.

5) open iTune
6) Click on Device in iTunes and choose your iPhone
7) You can back up or Sync iPhone  to Windows 10,but only for audio files
But at least I can see my iPhone icon in PC and delete video files or copy videos files

fixed iphone 5s can not slide to power off

My iphone 5s screen was frozen. I hold the power button for a few seconds  and screen
showed "slide to power off". But I can not slide!!
There is another solution without slide to power off:
Reboot (holding the power and home button simultaneously)