Access is denied!

[bamb00zle]

Hello. First post on here and I think I have a major problems. I'll try and keep this as short as possible.

I've had problems with NVIDIA not installing the latest drivers on my CPU, so I uninstalled geforce and all of its components. I went into the registry following technical advice and deleted manually any geforce entries. I tried to reinstall geforce software but still it wouldn't install the programme or the drivers. I also followed a suggestion whereby uninstalling AVAST and re-installing but that didn't work.

I then downloaded a user made utility from the geforce forums that removes the components from the system to allow for a clean install. It goes through the system wiping everything from NVIDIA. I did this in safemode and restarted the machine.

Once back into it the main system it had uninstalled the VGA drivers and NVIIDA drivers but when I went to device manager to re-download, the CPU found the drivers but wouldn't install them saying 'access is denied'

I am the administrator on my machine so I promptly tried to change the permission setting on my CPU so I could reinstall the display drivers and the geforce stuff. This didn't work and stupid me, I didn't make a backup before using this utility. Basically, I can't install any drivers or even anything on my system now. I am now without a virus protection because the computer won't install anything at all as I don't have permission.

I'm worried I've messed up my registry or something requiring a lot of work to undo. The rest of the CPU is working fine but I can't install anything at all.

Is there any way to rectify this problem? How can I regain my permission or even bypass it? I tried to create another user account but it still doesn't work. I'm basically stuck. Please help if you can!

My CPU - win 7 64 bit home premium
HP Pavillion i3 2.4ghz
6 gb memory
Geforce 520M 1 gb

 

[archer]

Hi, Welcome to Seven forums.

My first doubt is on registry changes you made. What changes you made to registry is not clear to me.
Follow this article. Might be of some help

Keep us posted.

 

[bamb00zle]

None of those tips worked in the guide.

In regedit, I deleted all entries pertaining to NVIDIA.

Here are some of the error messages I get in the attachment

Any advice?

 

[essenbe]

I may suggest running http://www.sevenforums.com/tutorials/166445-windows-defender-offline.html
If that is no help try this http://www.sevenforums.com/tutorials/220165-troubleshooting-steps-windows-7-a.html
If nothing else works you may need to try a repair install ( http://www.sevenforums.com/tutorials/3413-repair-install.html ) realizing that a repair install is the last stem before doing a clean install. ( http://www.sevenforums.com/tutorials/1649-clean-install-windows-7-a.html )

On the Windows defender, you may be better off prepairing it on another computer.

If you get it corrected you may try installing Nvidia drivers using this method http://www.sevenforums.com/tutorials/327414-nvidia-drivers-avoid-problems.html