forget the access denied error message.
even if you get the access denied error message all the changes you make will be implemented after the restart.
so when you click on apply the access denied...

i would suggest first you can clear all the temporary files and all other stored information in your browser and also from the preograms tab of internet options click on manage add-ons and than...

since you have lot of things missing why dont you try doing a repair installation of windows using the disc.
if you suspect sometinhg to be wrong with the disc as well than i would suggest copying...

Try bootting the computer in safe mode.Try logging in all the user a/c's u see in safe mode.If you see the start menu and icons in safe mode than:
start-run-msconfig.
click on startup tab-click on...

1.start-run-inetcpl.cpl
clear all the temporay files and downloaded program files and all click on the programs tab-clcik on manage add-ons-disable all the add-ons.This resolves most of the issues....

http://support.microsoft.com/kb/921470/en-us

You can also try the folowing commands to reset winsock and tcp/ip if you have SP2:

start-run-cmd :
"netsh winsock reset" and press enter (without qoutes)
"netsh int ip reset c:\resetlog.txt"...

Have a look at this article which describes the same problem :
http://support.microsoft.com/kb/892896/en-us

Hope this resolves your issue.

When you visit the link, it will tell you that you need a hotfix.
What you need to do is call Microsft Toll free no. 1800-936-5700 for US . And tell the rep who picks up that you need help doing a...

please visit the following link to get the issue resolved :
support.microsoft.com/kb/909918

Get back if requiring further assistance

Nothing to worry about, just see this KB article and the problem will be solved. You just have to download the update :
support.microsoft.com/kb/935448

The Realtek HD Audio Control Panel is the...

Boot into reocvery console and do
chkdsk /p
chkdsk /r
Setup didnt give you the option to repair bcoz it could find the previous installation as ur HDD had some problems.
i suggest from recovery...

You maky also check is the same issue persists in safe mode with networking. If its working in safe mode with nettworking than you need to do a clean boot using msconfig

Supposing it does than...

You can always call microsoft for this becasue for Windows update issue we provide free support.
One more thing you can try before calling is to go start-run-serives.msc and stop the automatic...

You get the access denied error message while using msconfig if you have installed any security software specially norton or mcafee. I have found you can safely ignore this message and can make all...

Tap F8 continously as soon as u start ur computer. choose disable auto restart on system failure option.you will get the blue screen of error. check out on the web the error code or post the error...

I had exactly the same problem on my computer. I ran online scans at different websites found viruses and spywares which i than removed. My problem resolved.
But i have seen other computers which...