How can I enable registry editing? It can’t work after some time of downloading new window. 
Although I am not really sure what the situation is, it sounds as though you might be experiencing a problem with some missing or broken files. This type of corruption can occur for any number of reasons. The good news is that you can try a few things to repair your registry files so that you can once again edit the registry.
What Can You Do with the Registry Editor?
Computer users can use the registry editor to complete a number of tasks including:1) Change a value.
2) Add a subkey or value.
3) Locate a subkey, subtree, value, or key.
4) Rename a subkey or value.
5) Delete a subkey or value.
Troubleshooting Problems Editing the Windows Registry: Enable the Registry Editor
To enable the Registry Editor directly, you will need to access the Group Policy Editor. Although following the directions listed here should allow you to regain your ability to edit the registry, you should create a back up or system restore point in case you encounter a problem.
How to Enable the Registry Editor Using the Group Policy Editor
Follow these steps closely:
1) Navigate to “Start” and click.
2) Select “Run.”
3) Type in “gpedit.msc.” (Don’t use the quotation marks.)
4) Navigate to the following option, “User Configuration.”
5) Navigate to the following option, “Administrative Templates.”
6) Navigate to the following option, “System.”
7) Navigate to the following option, “Prevent access to registry editing tools.”
8) Select the option “Disabled.”
9) Select the “OK” button to save these new settings.
10) Reboot the computer to enable these settings.
Troubleshooting Problems Editing the Windows Registry: Clean the Registry
If you use a reliable registry cleaner such as RegCure, then you can clean up missing or broken files safely. Registry cleaners are much safer than manually editing the Windows registry, especially those with rollback features. Hopefully, this will restore your ability to use the registry editor without any problems once again.Troubleshooting Problems Editing the Windows Registry: Scan for Malware
In some cases, problems using the Registry Editor have been linked to some type of malware application. If you haven’t scanned your computer in a while with an up-to-date anti-virus/anti-spyware application, then I suggest that you do so now. If you need a program, I can recommend Anti-VirusPLUS.
