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When I open command prompt it gives me:

Command Prompt has been disabled by your administrator

method -I :

Click Start, Run and type this command as it is :: better to copy and paste::

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

This is a part of registry edit command

Even though The problem persists then move to Method -II

method- II :

Using Group Policy Editor in Windows XP Professional.

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


*Navigate to User Configuration \ Administrative Templates \ System


*On Right-side..Double-click the Prevent access to the command prompt

*You can then set the policy to Not Configured or disabled. Disabling or .setting
to Not Configured should mostly solve the problem


method -III ::

Edit the registry directly by opening run and ,

* Open Registry Editor (Regedit.exe) and move to:

* [HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System]

In the right-pane, double-click Disable CMD and set it's data to 0

This is the same tweak as that of method -I

method -IV::

This is the method to check any malwares are present or not::

Go through these general malware removal steps systematically

http://www.elephantboycomputers.com/page2.html#Removing_Malware

If still the problem hangs on go to my task manager problem and See the

Last section of softwares for removing anti virus ..Then definitely your problem

will be solved :

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Task MANAGER Problems ::

Task manager disabled by administrator :::

* To disable/enable Task Manager restrictions:


For XP Professional:

Method -I :::

1.. Click Start | Run.
2.. Enter gpedit.msc at the command line and click OK.
3.. Select User Configuration | Administrative Templates | System |
Ctrl+Alt+Delete Options | Remove Task Manager.
4.. Double-click the Remove Task Manager option from the Group Policy
menu. You can then disable, enable, or set the policy to Not Configured.
Remember: Since the policy in question is called Remove Task Manager, by
disabling the policy, you are actually enabling the Task Manager.

* Disabling or setting this policy to Not Configured should solve the
problem. *

Method - II :::

* Click Start, Run and type Regedit.exe
* Navigate to the following branch:

HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \
Policies\ System

* In the right-pane, delete the value named DisableTaskMgr
* Close Regedit.exe

Method - III :::

Click Start, Run and type this command exactly as given below: (better - Copy
and paste)
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v

DisableTaskMgr /t REG_DWORD /d 0 /f

* If the problem still persists go through the following procedure ::

Download the Following LINKED exe files ::

xp_taskmgrenab.exe :: Allows you to enable or disable Task Manager for the

Current User.

This small GUI (Graphical User Interface) utility allows you to easily enable

or disable Task Manager. The only time its useful, or effective, is when you

see this error message when you try to use Task Manager.
Open the ZIP file and extract or run the EXE inside.

If Task Manager opens, then closes immediately , see my Emergency Utilities

application.

xp_emegencyutil.exe -

Creates usable copies of REGEDIT, MSCONFIG and Task Manager
v1.2 - 07/26/2004

This small VB 6 utility will create a usable backup copy of Taskmgr.exe,

MSConfig.exe and Regedit.EXE in a new folder, called C:\EmergencyUtils. The

new copies will be named Copy_of_Taskmgr.exe, Copy_of_MSConfig.exe and

Copy_of_Regedit.com.

These programs are extremely helpful, and usually necessary in helping to rid

your computer of a viral infection. Many virus programs will intercept these

programs, based on their original file name, and prevent them from running.

The alternate copies will not encounter this problem. Simply navigate to the


C:\EmergencyUtils folder and double click the file you need to run.

To use: Download the xp_emergencyutil.zip file and save it to your hard

drive. Double-click the xp_emergencyutil.zip file and extract

xp_emergencyutil.exe to your hard disk. To run the EXE just double click it,

there is no installer. You will have the option of running the programs

automatically, after the copies are created.

NOTE : Your antivirus software may warn of a potentially malicious script.

This is normal, as the Windows Scripting Host is used to create the "copies"

of these 3 utilities.

Operating Systems: Windows® XP and Windows® Server 2003 only. Requires VB 6

Runtime Libraries, included in Windows® XP.


* This is the final stage to get Task mgr , download each of the below

apps and run in all drives:

1. Ad-Aware
2. VX2 Cleaner:
3. Spybot
4. CW Shredder
5. Hijack This


These viruses terminate regedit.exe / msconfig.exe / taskmgr.exe.

* W32.HLLW.Kefy50
* Backdoor.IRC.Yoink.A51
* W32.HLLW.Cydog@mm52
* Backdoor.Volac.dr53
* W32.Kwbot.R.Worm54
* W32.Erkez.B@mm55
* W32.Spybot56
* W32.Mytob.LD@mm57

The following viruses delete Regedit.exe, Regedt32.exe, Msconfig.exe,

Taskmgr.exe

* W32.Petch.B58
* W32.HLLW.Maax.B@mm59