Windows 10: Log in Problem on windows 21H1

hi,I have installed a Kaspersky security center "KSC", a single administration console for controlling all Kaspersky Lab security solutions and system administration tools, on a computer with a windows version 21H1. There are 1 user account and 2 administrator accounts on it. the user and 1 administrator account was used to operate the KSC while the other administrator account is used as a backup. However, recently, I couldn't log in to these 2 accounts but fortunately I could reset these 2 account log in credential via the backup account. I don't know what was the problem. Please advise if

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Windows 10 1709 System Restore problems...

That seems to be an attempt at Option 2 in the tutorial, which requires you to
a. Boot to a command prompt (Did you?)
b. You then seem to be mixing steps 3,4 and 5, thus your command is incorrect.

I suggest Option 1 is easier.

If you still have problems, please repost listing each specific step and saying which option from the tutorial you are using. Thanks.

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

Black Screen after Log on


Computer boots to windows log on,have no password here.After a minute on log on it go to a black screen,stays there forever. I can get to Task Manager from black Screen,lost on what to do next. Just want my Windows 10 back, not sure what caused this problem. Any Suggestion on what my next step should be?*Sad