Hello,
Thank you for posting your concern here in Microsoft Community and welcome to the Windows 10 Family. I would be happy to assist you.
From the description provided, I understand that the images stored in your computer cant be edited as it is already in use by some other program.
I would suggest you to place the computer in a Clean Boot situation and check if it helps to isolate and identify the issue. Please follow the below steps.
1. To disable all non-Microsoft services consult the article called
Clean Boot.
Follow: https://support.microsoft.com/en-us/kb/929135
Note: After troubleshooting, refer to this section "How to reset the computer to start normally after clean boot troubleshooting"
Disclaimer: A clean boot is performed to start Windows by using a minimal set of drivers and startup programs. This helps eliminate software conflicts that occur when you install a program or an update or when you run a program in Windows. You may
also troubleshoot or determine what conflict is causing the problem by performing a clean boot. You must log on to the computer as an administrator to be able to perform a clean boot. Your computer may temporarily lose some functionality when you perform a
clean boot. When you start the computer normally, the functionality returns. However, you may receive the original error message, or experience the original behavior if the problem still exists. If the computer is connected to a network, network policy settings
may prevent you from following these steps.
2. To disable any 3rd party unwanted startup programs in Windows 8 and above, follow:
http://social.technet.microsoft.com/wiki/contents/articles/20119.how-to-enable-or-disable-startup-programs-in-windows-8.aspx
Alternatively, I would also suggest you to check for the file association rules set for the image files stored in your computer.
Ref: http://answers.microsoft.com/en-us/windows/wiki/windows8_1-desktop/windows-81-how-to-set-and-restore-file/16c2e10d-ec99-4fee-8f56-b87c4338e006
Note: Links relevant to Windows 8.1 also applies to Windows10.
Hope the above information was helpful. If you need further information, feel free to write to us and we would be happy to help you.
Thank You.