There are two way to check.first is you can directly check whether key contain A or not in binding like this:-. but i think this is not the better way so instead of this you can use ko.computed to check.
Check for operating system information in Windows 7. 1  Click the Start button , enter Computer in the search box, right-click Computer, and then click Properties. 2  Look under Windows edition for the version and edition of Windows that your PC is running.
This update is available from Windows Update. . The following files are available for download from the Microsoft Download Center: To apply this update, you must be running Windows 8.1 or Windows Server 2012 R2. To apply this update, you do not have to make any changes to the registry.You have to restart the computer after you apply this update.This update does not replace a previously released update.o apply this update, you must be running Windows 8.1 or Windows Server 2012 R2. To apply this update, you do not have to make any changes to the registry. You have to restart the computer after you apply this update. This update does not replace a previously released update.