Service registration is missing or corrupt

From recently I can't update windows and I ran MS Fix it Center and it shows that service registration is missing or corrupt.

how do i rest service registraton sally

And I'm too outdated to not know.

  The blank screen, or "box" with the flashing text courser is a command prompt.

 In "old school computing", pre windows like A-Basic & DOS, typed commands and text were used vs graphic menus (windows), that you then used "point and clicks" with.

A simple, powerful tool today. From being simple a short cut, to a complex programing tool, it does it a lot.

 Commands prompts do(did) vary. So just be careful about "where" you are playing when throwing commands around. Make sure its the right command for that prompt.

The "windows key" + R  should bring it up if the os is running.

It can be used to launch windows, if its there, but you will have to locate updated specifics

   A full lists of OS commands can be found with a search (about 300 for windows).

Just reading them over quickly would help you get a better grasp of what I'm implying as well as what you can do with them. 

Save some time and reload your old OS.

 Unless you're strictly a social butterfly with a need of  "less", and want something like on a cell phone, W-10 sucks. Nice on a phone maybe.

   I'm going back to W-7 as soon as I copy some newer data and back up files.

Sorry to be so stupid but need to ask what is the command prompt and how do I open it to type the information???  Need simple instructions as I'm no computer whiz...guess you already figured that!!!  Thanks so much!!!!

Hi, click on Main menu->all programs->Windows Accessories find the small black box which says comman prompt then REMEMBER YOU MUST PRESS YOUR LEFT MOUSE KEY AND CLICK RUN AS ADMINISTRATOR. It will open now in a Dos like black box. Now do as the former person described in that order.

Hope it works for you

Sorry to be so stupid but need to ask what is the command prompt and how do I open it to type the information???  Need simple instructions as I'm no computer whiz...guess you already figured that!!!  Thanks so much!!!!