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Windows 7: Unable to delete registry keys

27 Jul 2015   #1
Tegewaldt

Windows Home Premium 64bit
 
 
Unable to delete registry keys

Hello Sevenforums

Whilst trying to delete the registry keys Mpfilt and subkeys, i encounter different errors depending on my approach.

Trying to just delete the keys usually results in a problem with permissions.

Running in admin mode etc. changning permissions reports that "an error has occurred" while trying to delete.

Essentially, i need a failsafe way to remove the keys.

Thank you in advance Sevenforums members

-Tegewaldt


My System SpecsSystem Spec
.
27 Jul 2015   #2
GokAy

Windows 7 Ultimate x64 SP1
 
 

Why are you deleting them?

Try running regedit through - GiveMePower Download
make sure you backup the registry, or create a manual System Restore point
My System SpecsSystem Spec
27 Jul 2015   #3
Tegewaldt

Windows Home Premium 64bit
 
 

To attempt to fix my usb ports.

The link you gave me reads error 552 when i try to open it
My System SpecsSystem Spec
.

27 Jul 2015   #4
Ranger4

Windows 7 Home Premium 64 bit sp1
 
 

What is the problem with your USB ports?. Usually USB problems are associated with drivers. Could you show a screen shot of your Device Manager with the USB section expanded.
My System SpecsSystem Spec
28 Jul 2015   #5
Pyprohly

Windows 10, Windows 8.1 Pro, Windows 7 Professional, OS X El Capitan
 
 

Hi Tegewaldt,

If you believe it's the permission settings that prevent you from deleting those keys, start up a PowerShell session, run a line similar to the below and paste it's output here. This will allow us to view all the key's permissions.

Code:
"HKCU:\Path\To\Key" | %{$a = Get-Acl $_} ; ''; $env:Username; $a.Owner; $a.Access | ft -A -Wr
My System SpecsSystem Spec
28 Jul 2015   #6
Tegewaldt

Windows Home Premium 64bit
 
 

First of all, i found this thread, which i thought i'd give a try since the problem sounded almost identical to that of mine.
USB Problem. Driving me nuts!

The USB ports do not work with any devices plugged into them, and it's been like this since a recent power surge.

i encountered a BSOD for some reason while trying to navigate using the keyboard (PS/2 & USB mouse not working)

@Pyprohly how do i use the powershell, and should i just replace the "red text" with like "C:\Windows\...\Key"?

On a sidenote: Sorry for foreign language
And i am posting "screenshots" from my phone since i cant easily transfer files from the affected PC.


Attached Thumbnails
Unable to delete registry keys-dsc_0112.jpg   Unable to delete registry keys-dsc_0111.jpg  
My System SpecsSystem Spec
28 Jul 2015   #7
GokAy

Windows 7 Ultimate x64 SP1
 
 

Load defaults in BIOS.
Download and make a bootable DVD/USB Linux Mint MATE, boot with it and see if USB devices work with it.

For Powershell, open a cmd and enter powershell
My System SpecsSystem Spec
28 Jul 2015   #8
Tegewaldt

Windows Home Premium 64bit
 
 

The USB devices work while in BIOS, and resetting to defaults doesn't change anything as far as i can see.

Since the problem occurs when windows loads up, why would trying the ports on Linux make any difference? Just curious
My System SpecsSystem Spec
28 Jul 2015   #9
GokAy

Windows 7 Ultimate x64 SP1
 
 

If they are working in BIOS, I would say not really.

Tried this MS fixit yet? https://support.microsoft.com/en-us/...problems/en-us
My System SpecsSystem Spec
28 Jul 2015   #10
Tegewaldt

Windows Home Premium 64bit
 
 

Will try it, as well as the powershell as soon as i get home.

On a sidenote; i have a backup system.image on a secondary drive (which i have access to)

If All fals, it'd be handy to know how to reset the system through it
My System SpecsSystem Spec
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 Unable to delete registry keys




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