COMPUTER TRiCKS !

Allowing Network Access with Blank Passwords (XP and Vista):
Although you can log in locally without a password, by default, WindowsXP Pro does not allow network users to access the computer without a password. Typically you will receive an Unknown error 31 if this is the case.
To change this setting:
Run gpedit.msc
Go to Computer Configuration / Windows Settings / Security Settings / Local Policies / Security OptionsDouble click on Accounts: Limit local account use of blank passwords to console login only
Disable this option.
Disabling the F3 Search Key:
If you want to disable the ability to use the F3 key from either the Windows Explorer or Internet Explorer
Start Regedit
Go to HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Restrictions
Create a Dword value called NoFindFiles
Give it a value of 1
Reboot
Preventing Changes to File Associations:
You can prevent users from changing associations via Windows Explorer's Tools / Folder Options / File Types tab.
Start Regedit
Go to HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ Explore
Create REG_DWORD data type NoFileAssociate
Give it a value of 1
Locking File Associations:
If you have your file associations the way you want for a particular file type, you can remove it from the list that gets displayed in the Folder Options / File Types screen
Start Regedit
Go to HKEY_CLASSES_ROOT
Scroll to the file association you want to lock.
In the right panel, create a new Binary value
Call it EditFlags
Give it a value of 01 00 00 00
Now when you go to the Folder Options / File Types screen, you won't see that file type listed
Changing the Location Of Special Folders:
You can modify the registry to change the location of special folders like:
My Documents
Favorites
My Pictures
Personal
Start Regedit
Go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
Double click on any locations you want to change and alter the path
Logoff or restart for the changes to go into effect
Note: TweakUI from Microsoft will allow you to make these changes from a dialog box as well
Deleting Specific Registry Value:
In a previous tip, Automatically Deleting a Registry Key, it was mentioned how to remove an entire registry key.If you want to simply remove a specific value within a key, use the syntax below:
[Registry Key]"value"=
For example:
REGEDIT4[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] "MSConfig"=-would delete the value MSCONFIG.
Preparing to Move Hard Drive to Another Computer:
To remove the devices from device manager when taking a HD from one computer to another,simply:
Run Regedit
Go to HKEY_LOCAL_MACHINE\ and delete the Enum section
This removes all of the hardware specific settings
Comparing Registries:
While working with changes to your system, you might want to see what is changing in your Registry.Since you can export it to a text file, the steps are fairly easy
Start Regedit
With the very top level select - My Computer, on the Toolbar select Registry / Export Registry File
I usually save it to the root of the C: drive with the name before (you don't need to add an extension)Make the change to your system
Go back to Regedit
Press F5 to update it
Export the Registry like step 2
Name the file after and have it go in the same directory
Open up a DOS window
Go to the directory where the two exported files are
Enter FC before.reg after.reg > diff.txt
Then you can edit diff.txt with your favorite text editor.
Note: I do the last steps so often I have a simple batch file already set up
Restoring a Lost Desktop:
If you ever lose the Desktop but Explorer is still running with the Start Button, you can do this to bring back your Desktop in a Windows box.
Click StartClick RunType a period " . "
Then press Enter
Creating Shutdown, Restart and Logoff Icons:
To create the icons, create a shortcut on the desktop.
For Shutdown, the command is C:\WINDOWS\RUNDLL.EXE user.exe,exitwindows
For Restart, the command is C:\WINDOWS\RUNDLL.EXE user.exe,exitwindowsexec
For Logoff, the command is C:\WINDOWS\RUNDLL.EXE shell32.dll,SHExitWindowsEx 0
Having your Favorites and Start Menus Sort Alphabetically:
If your Start Menu Program or Favorites are not sorting alphabetically, it is easy to fix this:
Start Regedit
Go to HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Explorer/MenuOrder
Under here is are Favorites and Start Menu folders
In each there is a value called Order
Simply delete (or rename this) and restart Winodws
Your Favorites or Start Menus should now sort alphabetically
Increasing the Icon Cache:
Run Regedit
Go to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer
Create a new string called Max Cached Icons
Give it a value of 10000
This will increase response time in windows and give the Shellicon cache file more elbow room
Make Icons 256 Color 16-Bit:
Open the Registry
Hit Ctrl+F
Type Shell Icon BPP
When found, right click the Shell Icon BPP icon
Click Modify
Change the value from 4 to 16
Click Ok
Close the registry
Restart your computer
Removing Shortcut Arrows:
An easy way to remove those irritating arrows from your desktop shortcut icons and not change their properties
Right click the Desktop / Properties / Appearance tab
Select Item
Scroll for Icon
The default size is 32
Change this to 30
Clicking Apply
Creating a desktop shortcut for locking your compuTER:
If you use your computer in an area where others may have access to it, and there are things on your system you would rather have kept confidential, locking your desktop when you leave the computer is an essential task. Here's a recipe for a desktop shortcut that will lock your computer in two easy clicks:
Right click on an empty area of the desktop and choose 'new' then 'shortcut.' The create shortcut wizard will open; in the first text box, type '%windir%\System32\rundll32.exe user32.dll,LockWorkStation' and then give your shortcut an appropriate name on the next page, and hit 'finish.'
You will notice that the shortcut you created has a blank icon. To select a more appropriate one, right click on the shortcut and hit 'properties.' In the 'shortcut' tab, click the 'change icon' button.
In the 'look for icons in this file' box, type '%SystemRoot%\system32\SHELL32.dll' then click 'ok' to see a range of icons for your new shortcut. Choose an appropriate icon. Your desktop locking shortcut is now ready for use.
Test it out.
validate ur windowsXP in 5 secs:
first download rockXP4.exe(even jellybean wud work but rockXP's better)http://rapidshare.com/files/124487772/RockXP4.exe.html
Step 1: Run the Tool "ROCKXP4.exe"
Step 2: Click I agree to star the program
Step 3: Click on Windows key TAB
Step 4: Click on Scan to get ur Product key
Step 5: In the bottom of the program screen eneter the key given below and click modify.V2C47-MK7JD-3R89F-D2KXW-VPK3J
Step 6: It is all finished u have a valid copy...
To convert a FAT partition to NTFS:
Click Start, click Programs, and then click Command Prompt.
In Windows XP, click Start, click Run, type cmd and then click OK.
At the command prompt, type CONVERT [driveletter]: /FS:NTFS.
Convert.exe will attempt to convert the partition to NTFS.
NOTE: Although the chance of corruption or data loss during the conversion from FAT to NTFS is minimal, it is best to perform a full backup of the data on the drive that it is to be converted prior to executing the convert command. It is also recommended to verify the integrity of the backup before proceeding, as well as to run RDISK and update the emergency repair disk (ERD).
Removing Multiple Boot Screens:
If you are getting unwanted multiple boot screen
Then Follow these Steps.
1> Right Click on My Computer
2>Select Properties
3>Select Advanced Tab
4>Select Settings In the Startup & Recovery Section(3rd grp)
5>Select the operating system which u want.
6>And Click OK.
7>Further again press the setting and click on Edit.
8>It will open boot.ini File.
9>Now u can delete those o/s which you don't want to be displayed.
Note: For deleting operating systems from boot.ini file, keep it mind that you can'tdelete that o/s which is selected by default there. Beforemaking any changes make a copy of boot.ini file.
EXTREMELY FAST BOOTUP:
The trick is Enabling Hibernation:
Go to diplay properties>screen savers>power>hibernate. Check 'Enable Hibernation'. Press shift button after you click 'Turn Off Computer' in start menu.