can't enable network discovery, can't access firewall

Windows 7 pro Dell that is in a small domain. no GPOs applied. I can access advanced network setting and can click to enable network discovery and file/printer sharing but settings don't save. I can't access Windows firewall, nothing happens when I try to open it in Control Panel. It is started in Services. I can stop and start it but can't access it. I have used SFC, Rkill, Roguekiller, Malwarebytes, and installed AV deep scan (GFI managed AV agent) none of which found anything significant. Windows update works normally, IE works normally. I also ran tweaking.com all-in-one windows repair.
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rettif9DaleAsked:
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Neeraj KumarSystem adminCommented:
Try the below mentioned steps

Download the registry files (You can also export HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BFE from another working Win7 PC)
1055.BFE.reg ->http://blogs.technet.com/cfs-file.ashx/__key/communityserver-blogs-components-weblogfiles/00-00-00-52-58/1055.BFE.reg

0677.mpssvc.reg -> http://blogs.technet.com/cfs-file.ashx/__key/communityserver-blogs-components-weblogfiles/00-00-00-52-58/0677.mpssvc.reg

Launch and import them to registry

Restart your PC

Now,open RUN and type

regedit and click ok

go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BFE

Right click on it-permissions

Click on ADD and type

Everyone and click ok

Now Click on Everyone

Below you have permission for users

Select full control and click ok

Now,open RUN and type services.msc and click ok

start base filtering engine service and then windows firewall service
rettif9DaleAuthor Commented:
After importing the files and restarting I opened regedit and navigated to BFE. Everyone was already listed and had inherited Full Control. In services base filtering engine and Windows firewall services were already started. Still can't open Windows Firewall.
rettif9DaleAuthor Commented:
I still haven't found a solution to this problem. Will re-install OS.

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rettif9DaleAuthor Commented:
no further suggestions have been offered.
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Windows 7

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