Registry Editor, Task manager, Command Prompt Disabled

It's long but this should get your problem resolved and I would appreciate a Four thumbs up if it helps you ,If u have connected your printer only through the USB then leave out the last step.

Fatal Error 2203 - Windows XP
Windows Vista.
Giving permissions to C:\Program files folder may sometimes be difficult but here is the resolution.
Perform L3 uninstallation.
Delete digital imaging folder from C:\program files\hp folder.
Delete digital imaging folder from registry.
Deleting registry key below:
Registry Path - HKEY_LOCAL_MACHINE\SOFTWARE\Hewlett-Packard\Digital Imaging
On completing the above steps
Note: * Do not Restart the computer.
Click Start and type Run command in start search bar.
Right click command prompt and Run as Administrator
Type the following command
Net user administrator /active:yes
The above command will enable hidden account in Vista Operating system. Once enabled,
Restart the computer.
Once Restarted, "New user account will show up on logon screen called "Admin" and no password required."
Once logged in to Admin account
Reinstall the software.
After successful software installation, Please use the below command to disable hidden account feature
Click Start and type Run command in start search bar.
Right click command prompt and Run as Administrator
Type the following command
Net user administrator /active:no

1.uninstall the complete HP software, run windows clean up utility
2.under msconfig, disable MSconfig's sevices(non microsoft)

Try this:

If Task Manager has been disabled, you can re-enable it if you have administrator privileges on the computer.
To enable Task Manager on a computer running Windows Vista Home Basic or Windows Vista Home Premium This procedure requires you to edit the registry. An incorrect change to your computer's registry could render your computer inoperable. We strongly recommend that you back up the registry before making any changes. For more information, see Back up the registry.

1. Open the Registry Editor by clicking the Start button , typing regedit into the Search box, and then pressing ENTER.‌ If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
   
2. Navigate to the following location: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies
   
3. Double-click System, double-click DisableTaskMgr, change Value data to 0, and then click OK.
   

To enable task Manager on a computer running other editions of Windows Vista

1. Click the Start button , type gpedit.msc in the search box, and then press ENTER.
   
2. Under User Configuration, double-click Administrative Templates.
   
3. Double-click System, and then click Crtl+Alt+Del Options.
   
4. Double-click Remove Task Manager, click Disabled, and then click OK.
   

or you're computer might be infected by a virus, if you're not the one who disabled the task manager.

Try to scan your computer also.

If you are using Window's XP or later the problem is probably the account you are logged into doesn't have "administrative access". You will have to log into the administrative account to make network changes.

If you are running Vista the default administrative account is hidden. To access it do the following: First you’ll need to open a command prompt in administrator mode by right-clicking and choosing “Run as administrator” (or use the Ctrl+Shift+Enter shortcut from the search box)

Now type the following command :
net user administrator /active:yes

You should see a message that the command completed successfully. Log out, and you’ll now see the Administrator account as a choice. (Note that the screenshots are from Vista, but this works on Windows 7)

You’ll note that there’s no password for this account, so if you want to leave it enabled you should change the password.
Disable Built-in Administrator Account
Make sure you are logged on as your regular user account, and then open an administrator mode command prompt as above. Type the following command:
net user administrator /active:no

The administrator account will now be disabled, and shouldn’t show up on the login screen anymore.

Method 1 - Using the Group Policy Editor in Windows XP Professional

1. Click Start, Run, type gpedit.msc and click OK.
2. Under User Configuration, Click on the plus (+) next to Administrative Templates
3. Click on the plus (+) next tSystem, then click on Ctrl+Alt+Delete Options
4. Find Remove Task Manager in the right-hand pane and double click on it
5. Choose the option "Not Configured" and click Ok.
6. Close the Group Policy Window

Method 2: Change the Task Manager Option through the Run line

1. Click on Start, Run and type the following command exactly and press Enter

REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f

Method 3: Change Task Manager through a Registry REG file

1. Click on Start, Run, and type Notepad and press Enter
2. Copy and paste the information between the dotted lines into Notepad and save it to your desktop as taskmanager.reg

------------------------------------
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr"=dword:00000000
-------------------------------------

3. Double click on the taskmanager.reg file to enter the information into the Windows registry

Method 4: Delete the restriction in the registry manually

1. Click on Start, Run, and type REGEDIT and press Enter
2. Navigate to the following branch
   
   HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies\ System
   
   
3. In the right pane, find and delete the value named DisableTaskMgr
4. Close the registry editor
   

For Control Panel

Start | Run | Type: gpedit.msc | OK |
Navigate to >>>
User Configuration\Administrative Templates\Control Panel\
Prohibit access to the Control Panel
[[Disables all Control Panel programs.]]

Dear sir,
It seems to be u r computer is attacked by spyware.
You can enable Your Task Manage By Downloading Task manger Fix and Registory Editor Fix
Download Task manager Fix
Download Registry Editor Fix

other wise Follow the Manual Instruction but is slightly difficult to user.

Method 1 - Using the Group Policy Editor in Windows XP Professional

Click Start, Run, type gpedit.msc and click OK.


Under User Configuration, Click on the plus (+) next to Administrative Templates Click on the plus (+) next tSystem,


then click on Ctrl+Alt+Delete Options Find Remove Task Manager in the right-hand pane and double click on it Choose the option "Not Configured" and click Ok. Close the Group Policy
Window Method 2: Change the Task Manager Option through the Run line



Click on Start, Run and type the following command exactly and press Enter


REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f

1. Verity that the "Local Group Policy" or "Domain Group Policy" doesn’t block you from using

"Task Manager".

1.1 "Local Group Policy"

a. Go to "Start" -> "Run" -> Write "Gpedit.msc" and press on "Enter" button.

b. Navigate to "User Configuration" -> "Administrative Templates" -> "System" -> "Ctrl+Alt+Del Options"

c. In the right side of the screen verity that "Remove Task Manager"" option set to "Disable" or "Not Configured".

d. Close "Gpedit.msc" MMC.

e. Go to "Start" -> "Run" -> Write "gpupdate /force" and press on "Enter" button.

Note: If you are using Windows 2000, please follow KB q227302 instead stage "e".

Using SECEDIT to Force a Group Policy Refresh Immediately
http://support.microsoft.com/kb/q227302/


1.2 "Domain Group Policy"

a. Contact you local IT support team.


2. Verity correct registry settings::

a. Go to "Start" -> "Run" -> Write "regedit" and press on "Enter" button.


Warning: Modifying your registry can cause serious problems that may require you to reinstall your operating system.
Always backup your files before doing this registry hack.

b. Navigate to the following registry keys and verity that following settings set to default:

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr"=dword:00000000

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\LocalUser\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system\]
"DisableTaskMgr"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"DisableCAD"=dword:00000000

c. Reboot the computer.

Its a virus on your computer that has disabled the functionality of task manager, cmd, or registry. Run an antivirus scan and if the problem still persist, you need to either repair or format your pc.

Method 1 - Using Group Policy Editor If you are using an edition of Windows Vista (Windows Vista Business, Enterprise and Ultimate editions) which includes the Group Policy Editor, follow these steps:

• Click Start, type gpedit.msc in the Search box, and press ENTER
• Go to the following branch:

User Configuration | Administrative Templates | System

• Double-click Prevent access to registry editing tools
• Set it as Not Configured

Important: If it's already set to Not Configured, set it to Enabled and click Apply. Then repeat the steps and revert the setting back to Not Configured. This removes the registry based policy if set already.
Method 2 This method should work in all editions of Windows Vista.

• Download reg_enable.vbs attached at the end of this article, and save it to Desktop
• Open an elevated command prompt. To do this, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
• Switch to your Desktop directory by typing the following command, and then pressing ENTER:

cd /d %userprofile%\desktop

• Then, type the following command and press ENTER

wscript.exe reg_enable.vbs

• Type EXIT to close the Command Prompt window.

If everything worked fine, the DisableRegistryTools policy should have been removed by now. See if you're able to launch Regedit.exe now.

First install: NORTON REMOVER
Then Make a New account on your System