Windows 10 problem

tôi o bị nhiều lổi ở windows10.
1.nhiều files/folders o delete được vì ownership problem.
2.o install new programs mới được vì có error :cannot access c:/ windows/system32/.....
3. o reset được windows ,o reinstall được windows 10 có lẻ vì lổi ở phần 2.
Xin quí vị cứu,rep ơ Microsoft cũng chạy rồi

XIN CÁM ƠN NHIÊU

Ban thu cai nay coi:

Take ownership of a file or folder in Windows 10 using File Explorer
To take ownership of a file or folder in Windows 10 without using third party tools
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.

What it means is permissions on this parent object will replace those on its descendant objects. When cleared, permissions on each object, whether parent or its descendant, can be unique. Click OK to get full access to the file or folder.
That's it. You just changed the ownership and got full access to the file in Windows 10 using the File Explorer app.
See: How to restore the TrustedInstaller ownership in Windows 10
Take ownership of a file or folder in Windows 10 using TakeOwnershipEx
Alternatively, you can save a lot of your time using my freeware, TakeOwnershipEx. It allows you to change file ownership and access rights with one click. Just select the file or a folder and click the "Take Ownership" button:

After you get full access to the desired file or folder, you can even restore the default permissions which it had. Click the "Restore ownership" button to restore it:

That's it. Using the TakeOwnershipEx app, you can save your time, but even if you prefer using the built-in options in File Explorer, it shouldn't be too hard task for you if you followed the instructions in

cám ơn Tiger : tôi muốn delete mấy cái files system back up của my PC,toi thử change ơnership , nhưng 0 được,sau đó mấy files nầy trốn đâu mất tôi o tìm lại
được vì window 10 o cho tôi vô my PC .
Tôi sẻ post thêm mấy cái errors nầy để các bạn giúp.
Hiện tai tôi con cái laptop để xử dụng.
NHT