did you tried to check if control panel is set to be displayed in your start menu? check it by doing a right click on your start button and the click properties, the taskbar and start menu properties should open, under the start menu tab you can either select start menu or classis start menu, select start menu then click customize, this should give you another window, that window is the customize start menu window, on this window go to advanced and under advanced look for control panel and select the option "Dispaly as a link" or "Display as a Menu". If this doesn't resolve the issue then the problem is on the windows registry.
Go to the run command and type control panel and press enter key
You can also open the control panel by using command prompt
Type control panel in the C:\ and press enter
when control panel window is open then place your cursor at Add Hardware.You can just select Add Hardware option.
click on file menu and use create shortcut command to create the shortcut button to open the control panel window and place this button at start -UP
"This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator".
Cause of the problem:
The problem is confirmed to be caused due to change in the default web browser or the Internet Explorer.
Steps to fix the problem:
You can try following solutions and see which one fix it for you.
* Go to Control Panel -> Add Remove Programs, click on Set Program Access and Defaults.
* Open up the configuration whichever is selected and change the default web browser to something else.
* If you use older versions of IE then upgrade it to the latest one.
The problem can be caused due to the corrupt or damaged key HKEY_Local_Machine\Software\Classes\htmlfile\shell\open\command.
So just download this file, unzip it and double click to extract the registry.
* Open registry editor and search (Ctrl + F) for the value nocontrolpanel.
* Change its value from 1 to 0.