Windows Features blank

I have a Windows 7 Pro 64bit PC which won't display any entries in the Windows Features (Turn Windows Features on or off) box. I have tried a number of suggestions on the Internet which include:
* sfc /scannow
* Boot from Windows Repair disc and run repair
* Install System Update Readiness Tool
* DISM /Online /Cleanup-Image /RestoreHealth
* reg delete HKLM\COMPONENTS /v StoreDirty
* Verify that the Windows Modules Installer service is running and Automatic

I can't think of anything else.
Any suggestions appreciated.
ClintonKAsked:
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RaminTechnical AdvisorCommented:
Please follow the structions:

Download System Update Readiness Tool for Windows 7  x64-based Systems
https://www.microsoft.com/en-us/download/details.aspx?id=20858

Run it.

When installation has completed, click Close and restart your computer. Once

Windows has booted, try running Windows Features again and see if the list loads into

the window or not. IF not, continue to the next step

Go to C:\Windows\Logs\CBS\ and open the CheckSUR.log file with notepad. The

following steps are possibly going to be a little tricky because everyone gets different

results in the log file.

Take note of the section that says “Checking Package Manifests and catalogs” in the

CheckSUR.log file. If there are errors, you will see a line starting with (f) followed by an

error code and path. If you see (fix) on the next line below the (f), it means the tool

managed to fix that particular error.

checksur2.png
As you can see in the image above, the fourth and eighth (f) lines highlighted in pink don’t have (fix) on the next line and are therefore not fixed as the checking continues. You need to make a note of all the unfixed “MUM” entries in your log file (line 4 above is a MUM error that wasn’t fixed).

Now you will need to manually delete the related registry keys according to what you see in the CheckSUR.log file. Run regedit and go to the following location.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\Packages\

As an example, the fourth line error in the CheckSUR.log file above shows the file:

Package_2_for_KB2757638~31bf3856ad364e35~x86~~6.1.1.2.mum

So you’ll need to look for that key in the registry at the location stated above and then delete it. There won’t be a need to use the .mum extension in the registry. As long as the whole name matches without the extension, you can delete it.

missingfeaturesregedit.png
You WILL need to set full control permission before you can delete the corrupted registry key. Refer to this article on How to Take Ownership (Permission) of a Registry Key in Windows:
http://www.askvg.com/guide-how-to-take-ownership-permission-of-a-registry-key-in-windows/
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Rajul RajInformation Security OfficerCommented:
check with malwarebytes.
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ClintonKAuthor Commented:
After many hours of laboriously deleting registry entries I now have a populated Windows Features window. There was probably a quicker method as indicated in Ramin's article but I didn't fancy messing with the Registry permissions so I used Registrar Registry Manager to delete each one and that seemed to override any permissions restrictions.
Anyway, all done now so thanks Ramin.
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RaminTechnical AdvisorCommented:
I am very glad you got it working, and Thanks.
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Windows 7

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