Windows 10: i accidentally delete system in user or i just delete all user and the owner, and then my...

as you can see i the title "i accidentally delete system in user or i just delete all user and the owner, and then my c drive is denied" so i just wanted to ask is this possible to fix it? i can't even open google,edge,shell as administrator ,cmd as administrator and others, Please guys if any of you can solve this pls answer my Question this is the only device i had,if i double click at c drive it says ''access denied'',when i run cmd or shell as admin it said windows can't access or whatever but i can run shell in boot option :"it can't even run minesweeper","paint too".Thanks

:)

 

Create a new key in windows 10 registry but cannot delete even if change owner to login user

I accidentally create a new key in windows 10 but cannot delete.

I have tried to change the owners/permissions to match the login user with full permission but still does not work.

I tried to change the parent key folder permission/owner but failed.

Any suggestion will help as win10 can only allow for new creation but not modifying of registry enties.

I even try logging in by activating administrator user and system user but did not help.

really disappointed as it is wired headache if you cannot delete any keys you created.

 

Accidentally deleted user account - urgent need to restore WIndows 10

I accidentally deleted the user account that I was using (not admin) and now can't fix the issue.

So, I followed these instructions (sort of):

• Step 2: Choose Change your account name.
• Step 3: Type a new name in the box and tap Change Name.
• Step 1: Open Run by Windows+R, enter lusrmgr.msc and hit OK to open Local Users and Groups.
• Step 2: Open the Users folder, right-click a user and select Rename in the menu.

I renamed the user. But then, stupid me, it didn't change it when I checked the start menu. So I then, instead of changing the name back, I deleted that user (which I was actually logged in as - it didn't ask for a password or anything either). It then removed
it from the list (there was a list of 3 items to choose from - Administrator, Guest , and the account I was using. I deleted that account (Liam it was called)

I then stupidly decided to log off and restarted the computer. I then tried to login, and the user account it came up with was Liam - but obvsiouly as I'd deleted the user, when I typed in the password nothing happened). But because I deleted that user in
the way above, it seems to have gone completely. What can I do to restore it?

I've tried system restore but it fails. So can't get back to a restore point.

It's a bit of a pickle really as it's an important user account on my work network and has folders on it that we need to function. I can't access the pc via another, as when I click 'Liam' it just can't connect, says it can't find it. I think what I've done
has really broken the computer....

Any help will be gratefully received.

 

Accidentally deleted user profile

Hi

I was manually deleting a previous laptop owner’s user profile yet somehow my own and current profile was deleted even though i did not select it, and even thougj windows categorically states it cannot be done whilst logged into it, which i was.

My questions are:

1) how did this occur and how do i prevent it happening again? (because i still want to delete the previous owner’s user profile)

2) how do i delete the previous iser profle without deleting or corrupting anything else?