Hi Rodcornish
Welcome to Microsoft Community.
Based on your description, I understand that you are unable to paste the copied content elsewhere, and I understand very well how you feel!
You have already solved the problem by watching a YouTube video tutorial, and commend you on your problem solving skills and thought process!
I'm going to give you some solutions that will hopefully solve your problem successfully! However, this first reply may not be able to solve your problem due to the lack of information and the fact that this issue requires different aspects to be troubleshooted, so please understand and provide more information (pictures would be great!) in your reply. Thank you very much!
Option 1: May I ask that you using the keyboard shortcuts “Ctrl + C” for copy and “Ctrl + V” for paste?
If yes, at this point we try to use the mouse to select the content that needs to be copied, right-click and select Copy. Then move to the place that needs to be pasted, right-click and select Paste. See if the content can be pasted smoothly.
This step is to help us to check if the problem may be caused by keyboard shortcuts or malfunction of the keyboard itself.
Option 2: Please try to clean boot your computer.
Since clean boot only uses a limited set of files and drivers, it can help us to effectively troubleshoot the possibility of problems caused by third-party applications, driver conflicts, etc.
You can refer to Clean Boot for more information: How to perform a clean boot in Windows - Microsoft Support
After clean boot, please slide down the webpage after opening the link and find “How to determine what is causing the problem after you do a clean boot” This is a dichotomy that can help us pinpoint the service that is causing the problem and disable it!
Disclaimer: A “clean boot” starts Windows with a minimal set of drivers and startup programs. It helps to determine whether a background service is interfering with your game or program and to isolate the cause of a problem. These steps of "clean boot" might look complicated at first glance. However, to avoid any trouble for you, please follow them in order and step-by step so that it will help you get back on track.
Option 3: It is possible that the problem occurs due to corruption or loss of the currently used user account profile.
Let's try creating a new local administrator account from the command line and logging in to see if the problem persists.
Click “Windows Logo Key” to open the search bar -> Type “cmd” in the search bar and open it with administrator privileges -> Please enter the following command
net user USERNAME PASSWORD /add
net localgroup administrators USERNAME /add
Please note: USERNAME PASSWORD can be replaced with your preferred account name and password, if you don't need a password you can leave out the PASSWORD.
Option 4: Since you seem to be referring to some websites in your problem description, we have tried to clear the cache and cookies in your browser.
Since I don't know what browser you are using, I will use Edge as an example here.
Open Edge browser -> click on “...” in the top right corner button -> “Settings” -> “Cookies and site permissions” -> “Manage and delete cookies and site data” -> “See all cookies and site data” -> “Remove all”
Disclaimer: Your browser automatically saves temporary internet files to help pages load faster. Clearing this cache will sometimes fix website issues. Please back up all your personal files first, such as Favorites, to ensure you do not lose data.
Option 5: Try to repair the system completely, or at least make sure that the system is not the cause of the problem.
- Scan and repair the system from the command line.
Click “Windows Logo Key” to open the search bar -> Type “cmd” in the search bar and open it with administrator privileges -> Please enter the following command
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /RestoreHealth
SFC /Scannow
Please note: The above command needs to be repeated 5-6 times to ensure the integrity of the scan!
- Please try to solve the problem by non-destructive repair.
The steps are as follows
(1) First download the Media Creation Tool for Windows 10 via the following link. (Media Creation Tool)
The link is: Download Windows 10 (microsoft.com)
Once the download is complete open it and select the ISO file.
(2) After downloading the ISO file, double click to open and run “setup.exe”.
(3) Under the “Install Windows 10” page, select “Change how the installer downloads updates”.
(4) Under the “Get Updates, Drivers, and Optional Features” screen, select “Not Now”.
(5) Follow the instructions to continue.
Please note: If prompted for a key, the downloaded ISO image file does not match the current system version.
(6) Under the Select what to keep screen, make sure you select “Keep personal files and applications” so that the contents of your computer will not be affected or lost.
(7) Start the non-destructive repair.
I sincerely hope that the above solution will solve your problem. Please feel free to contact me if you have any problems or still can't solve them. (Photos related to the question would be great!).
I look forward to hearing back from you.
Best Regards
Arthur Sheng | Microsoft Community Support Specialist