Hello,
As per description, you are unable to delete a file.
If Windows is unable to not delete a file or folder, it may be due to one of the following reasons:
1.The file or folder is being used by system processes
2.The file to be deleted contains hidden files or folders
3.The file or folder is set to read-only mode
4.The file system of the hard drive contains errors
5.The system is infected with a virus
I would suggest you to follow the methods given below and check.
Method 1: Try to go into safe mode and try to remove the file. Check if that helps.
To go into safe mode refer the link given below
Windows Startup Settings (including safe mode)
http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-safe-mode
If issue still persists try method 2.
Method 2: Delete files using Disk Cleanup.
http://windows.microsoft.com/en-us/windows/delete-files-using-disk-cleanup#delete-files-using-disk-cleanup=windows-8
Hope this information is helpful. Please do let us know if you need further assistance with Windows, we’ll be glad to assist you.