Preventing Access in Windows

Prevent Access to Command Prompt

This setting also determines whether batch files (.cmd and .bat) can run on the computer.
If you enable this setting and the user tries to open a command window, the system displays a message explaining that a setting prevents the action.
Note: Do not prevent the computer from running batch files if the computer uses logon, logoff, startup, or shutdown batch file scripts, or for users that use Terminal Services.

START > RUN > GPEDIT.MSC > USER CONFIGURATION > ADMINISTRATIVE TEMPLATES > SYSTEM > FIND PREVENT ACCESS TO THE COMMAND PROMPT > RIGHT CLICK > PROPERTIES > CLICK ENABLE > OK REBOOT

Note: This will disable the command for all users including the local administrator. If you want to disable this for specific users only (and for XP Home users) make the change in the registry. Login to the account you want to change and create the following registry entries:

HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System\
DisableCMD  dword  0x00000001   to disable command prompt and batch files
or
DisableCMD  dword  0x00000002   to disable command prompt but not batch files

Prevent Access to Registry Editing Tools

If this setting is enabled and the user tries to start a registry editor, a message appears explaining that a setting prevents the action.
To prevent users from using other administrative tools, use the "Run only allowed Windows applications" setting.

START > RUN > GPEDIT.MSC > USER CONFIGURATION > ADMINISTRATIVE TEMPLATES > SYSTEM > FIND PREVENT ACCESS TO REGISTRY EDITING TOOLS > RIGHT CLICK > PROPERTIES > CLICK ENABLE > OK > REBOOT

Prevent XP from using alternate Video Driver

1. Some program or games like Ghost Recon, use alternate Video driver when it can't recognise the Primary Video card driver.
   
   
2. Alternate driver lack AGP support and performance. So this tweak will prevent window XP from using this alternate driver whenever it was called for.
   
   
3. Some bug may appear when using the primary Video driver
   
   
4. Here's how to do it:
5. -Run Regedit.
6. -Go to. --> "HKEY_LOCAL_MACHINE\SYSTEM\ CurrentControlSet\Control\Video"
7. -There will be 4 'display device GUID' key.
8. -Expand all 4 key.
9. -Open the 'subkey' labelled "000"
10. -Change any 'DWORD' value labelled "MirrorDriver"
11. from '1' to '0'.
12. -Close regedit, restart.
    
    
13. If Graphic card is soo slow (SiS based graphic
14. card) so, if AGP texturing capabilities disabled, my computer will go soo slow.
15. Use a program named "POWERSTRIP" to determine the AGP capabilities (and to overclock my Graphic Card).