My laptop was functioning on Windows 8.1pro. when I bought the laptop I had added a security system on the folders (some security system which was already present in my laptop and whose name I don't know). As I added on folders or downloaded stuff the security measure got attached to the folders, which I didn't know until recently. Apparently because of this security thing the folders will only open in Windows 8.1 pro on my laptop. I had transferred files from my laptop to my harddisk too. Without knowing this security thing getting tagged along, I updated my windows 8.1 pro to windows 10. Now when I connect my harddisk I am not able to open any of the files (the ones I made or downloaded in Windows 8.1 pro). Everything is locked. Unfortunately I have important documents which can't be opened or moved or copied too. Now when I tried to copy a folder, the system asked me to take permission from "S-1-5-21-1141541065-1878635876-2164326471-1001". Please do suggest a solution for this as soon as possible.
Thank you
Please follow the below steps to get full permission on the folder.
Open File Explorer, and then locate the file or folder you want to take ownership of.
Right-click the file or folder, click Properties, and then click the Security tab.
Click the Advanced button. The "Advanced Security Settings" window will appear. Here you need to change the Owner of the key. Click the Change link next to the "Owner:" label
The Select User or Group window will appear. Select the user account via the Advanced button or just type your user account in the area which says 'Enter the object name to select' and click OK.
Optionally, to change the owner of all subfolders and files inside the folder, select the check box "Replace owner on subcontainers and objects" in the "Advanced Security Settings" window. Click OK to change the ownership.
Now you need to provide full access to the file or folder for your account. Right-click the file or folder again, click Properties, and then click the Security tab.
Click the Add button. The "Permission Entry" window will appear on the screen:
Click "Select a principal" and select your account:
Set permissions to "Full control": Click OK.
Optionally, click "Replace all existing inheritable permissions on all descendants with inheritable permissions from this object" in the "Advanced Security Settings" window.
I kept getting the blue screen with Driver Power State Failure error message and then my computer would restart. I found your product and it did not happen any more. I just purchased an anti-virus (kaspersky) and now it is doing it again. It is so frustrating. My computer is only 6 months old. It is a Asus desktop.