Windows 10: accidentally removed something...

In the C security tab, I accidentally removed the authenticated users from the 'Group or usernames' list. Do I need to add them back, or is it not necessary? and how do i add them back again to the list?and What is this account unknown? is it a virus or somthing?

:)

 

Remove account

I suggest you backup your personalized files first before removing the account.
To delete an account, follow these steps:

1. Press WIN + X keys and click Command Prompt (Admin) from the menu.
2. Type the following command and press Enter. Replace test with the name of your sister's account. Code:

 

[FS/FT][US]   New PC Hardware and PS3 Games

It's still available... I must have removed the listing accidentally. I'm re-listing now.

 

Best way to remove problem Malware

Hi There,

I am trying to remove a bundle of Malware without success.

There is a bundle of listed programs which I try to uninstall through the typical Control Panel effort, but they remain listed there:

Buenosearch Toolbar
MyPC Backup
PC Performer
Speed Test 127
UnknownFile

I was looking at this weblink which provides a 5 step process for Buenosearch alone:
Remove Bueno Search (Removal Guide)

Not sure how much certain guides can be trusted. One of the first things I read was to download Revo Uninstaller, and I've not heard of it so I'm not sure if it's trustworthy..........