Computer Super Slow

[Miner06er]

I have not used my gaming PC in a while. I decided to try it again and turn it on. when I turned it on it seemed pretty normal, but took a bit longer than usual. I logged into my PC and was stuck at a black screen. I waited and then my task bar came up at the bottom, but none of my apps showed, just the windows button, cortana, and the time and notifications. After a while my wallpaper showed up, still no apps on the desktop. I then got a "Microsoft Windows is not responding" error. I ended the windows, now i'm just stuck with my wallpaper and an empty task bar. Please help!

 

[wpgwpg]

Press the Windows key and type CMD. Then right-click COMMAND PROMPT and click Run as administrator. Now run the following two commands:
. SFC /scannow
. DISM /Online /Cleanup-Image /RestoreHealth

 

[Miner06er]

Press the Windows key and type CMD. Then right-click COMMAND PROMPT and click Run as administrator. Now run the following two commands:
. SFC /scannow
. DISM /Online /Cleanup-Image /RestoreHealth

I can't even open command prompt. Whenever I click the windows button it doesn't do anything. My computer is too slow to even do that