Want to remove shortcut virus form your pandrive..???

Solution :

• Start open Run now type cmd and press enter.
• Assume my pen drive letter as I:
• Now Enter this command.
• attrib -h -r -s /s /d g:\*.*
• write/paste this command on your command prompt
• It'll show the hidden file.click on drive/folder instead of clicking shortcut drive icon.

Note : Don't forget to replace the letter I: with your pen drive letter. If you click the shortcut drive option this virus will be in your PC/Laptop so never click on it

Want to check your antivirus properly work or not ..???

Solution :

• Open notepad & copy the cod
• X5O!P%@AP[4PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
• save it with .exe
  eg.
  "textvirus.exe"
• When you save this file your antivirus program will detect virus immediately.
• If this happens then your Antivirus is working properly.
• If not, then its time to look for some other reliable program.

How to Disable/Enable Windows+x hot keys

Solution :

• Start button open Run type gpedit.msc.
• You see to Configuration from them select.
• "User Configuration" now you can see 3 option from that select.
• "Administrative Template" now select "Windows Components".
• Click on "Windows Explorer" now find.
• "Turn off Windows+x hot keys" by default it's "Not Configured".
• To enable select "Enable" after that "Apply" & "Ok".
• After doing it restart the system to get effect.

Note :Windows+x hot keys only for laptops not desktop

How to and Lock Hide Hard Disk Drives in My Computer

Solution : 

• Start button open Run type gpedit.msc.
• You see to Configuration from them select.
• "User Configuration" now you can see 3 option from that select.
• "Administrative Template" now select "Windows Components"
• Click on "Windows Explorer" now find.
• "Hide these specified drives in My Computer" double click on it.
• By default it's "Not Configured"after enable it select drive you want to Hide/Lock.
• After select drive now select "Apply" button & "Ok" button.
• After doing it restart the system to get effect.

Wifi Wireless Connectivity Versions

->There are multiple standards under Wi-Fi.

->Versions of Wi-Fi :

•  Version 802.11b :
• Speed : 11Mbps 
• Range : 140m

• Version 802.11a :
• Speed : 54Mbps 
• Range : 120m

•  Version 802.11g :
• Speed : 54kbps 
• Range : 140m

•  Version 802.11n :
• Speed : 150Mbps
• Range : 250m

•  Version 802.11ac :
• Speed : 1300Mbps
• Range : 250m

Bluetooth Wireless Connectivity Versions

->It's a wireless data transfer protocol that available in all mobile device. 802.xx is IEEE(Institute of Electronics & Electrical Engineers) protocol for wireless communication.

->802.15 is for Bluetooth range is shorter compare to other protocol but latest version increase Range & Speed

->Versions of Bluetooth :

•  Version 1 :
• Speed : 721kbps 
• Range : 10m

• Version 1.1 :
• Speed : 721kbps 
• Range : 10m

• Version 1.2 :
• Speed : 721kbps 
• Range : 10m

• Version 2 :
• Speed : 2.1Mbps
• Range : 10m

• Version 2.1 :
• Speed : 3Mbps
• Range : 10m

• Version 3 :
• Speed : 24Mbps
• Range : 100m

• Version 4 :    
• Speed : 25Mbps 
• Range : 100m

Restrict display user name on login screen

Solution : 

• Start button open Run type regedit.exe 
• Now find following path
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system 
• Now on right side click on dontdisplaylastusername.
• Right click on it & set value 1.To save setting restart your computer
• By disabling this function, neither the username nor password will be displayed on the screen

Edit Windows 7 provided Gadgets like Calendar, Clock you can also see their “.js” & “.css” file

Solution :

• Open My Computer go to you drive where Windows 7 installed
• "C:\Program Files\Windows Sidebar\Gadgets"

How to change Windows Default Sound

Solution :

• Start button open Run type regedit.exe
• Now find following pat
• HKEY_CURRENT_USER\AppEvents\Schemes\Apps\.Default\SystemExit\.Current
• Now in right side
• Double click on (Default)
• Set your selected sound path & that will play when system shutting down
• You can set other sound like windows start up, log off etc from .Default folder
  

How to change the background of WMP (Windows Media Player)

Solution :

• Start button open Run type regedit.exe
• Now find following path
• HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Preferences
• Now right side double click on the key LibraryBackgroundImage and enter a value between 0 to 6 (each number represents a background).
• You can also change many things from there.

How to Change Recycle Bin Icon

Solution :

• Start button open Run type regedit.exe
• Now find following path 
• HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\
• In these path find this following key
  
• {645FF040-5081-101B-9F08-00AA002F954E}\DefaultIcon
• In the DefaultIcon folder, there are two strings.  "Empty" and "Full" double-click the icon you wish to adjust by double clicking on either of these, and change the value data to the location of the icon you wish to use.
   

How to shut down or restart the computer with a batch file

Solution :

• Open Notepad
• Type following code
  
• shutdown.exe /s /t 00 (For Win 7 Shutdown)
• shutdown.exe /r /t 00 (Win 7 Restart)
• shutdown.exe /h (Win 7 Hibernate)
  
• Save file as .bat (Mention file name before extension)
  
• Now click on file

Restrict display user name on Login Screen

Solution :

• Start button open Run type regedit.exe
• Go on following
  
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system
• Find the key from right side with name dontdisplaylastusername
• Right click on it and number the value as 1
• To save this setting, restart your computer.
• By disabling this function, neither the username and password will be displayed on the screen.

Watch a movie created with Command Prompt

Solution :

• Start button open Run type cmd
• telnet towel.blinkenlights.nl press enter & watch it.

It'll work Fine in Windows XP not in 7 & 8 because by default telnet is off.

How to view full specifications of your PC

Solution :

• Start button open Run
• Now type dxdiag
• Now view all PC specifications.

Disable the Right click functionality on the Desktop

Solution :

• Start button open Run type regedit
• Go on following link
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
• In right side panel, right click to create a new DWORD value with the name NoViewContextMenu (it is case sensitive), then assign number 1 in value data box.
• Now close the registry editor and restart your computer after any changes to go into effect.
• But to enable right click functionality on desktop then simply change the value of data box or delete the NoViewContextMenu DWORD item.

How to Disable Dr.Watson in Windows

Solution :

• Start button goto run type regedit.exe
• Navigate to :
  HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ AeDebug
• Click on AeDebug & click Delete
• Alternativly just set
  HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ AeDebug \ AUTO to 0

What is Dr. Watson in Computer

->Dr. Watson is a debugger application. May be named drwatson.exe, drwtsn32.exe or dwwin.exe, depending on the version of Windows.It would collect error information following a program crash.A ext file drwtsn32.log is created whenever an error is detected.

->When a program error occurs in Windows, the system searches for a program error handler that deals with errors as they arise during the running of a program. If the system does not find a program error handler, the system verifies that the program is not currently being debugged and considers the error to be unhandled. program error handler is default in Dr.Watson

How can I reset the corrupted icons?

Solution :

• Open My Computer
• C:\Documents and Settings\User_Name\Local Settings\Application Data
• Replace C:\ with your system drive and "User_Name" with your username.
• Now find HIDDEN file named "iconcache.db"
• Delete it and restart your system

Regedit Disabled By Admin

Solution :

• Open Notepad pad, copy paste the following text to the note pad::
• REGEDIT4
• [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersio
• n\Policies\System]
• "DisableRegistryTools"=dword:00000000

• Save the text file as any name u with extension .reg

• example:- "enable.reg"
• After that double click to run the file

When I right-click on Start button and select "Open", a "Copy To" or "Move To" dialog box opens automatically.

Solution :

• Start -> Run
• Type regedit
• Goto Code:
• HKEY_CLASSES_ROOT\AllFilesystemObjects\shellex\ContextMenuHandlers\
• Now delete following 2 keys:
• Copy To
• Move To

How to get trash deleted emails from gmail

• To recover permanently deleted emails even after deleting them from your trash folder
• Open gmail then click the drop down arrow from your search box at the top of the screen.
• It'll ask you several question such as to: or from: subject, has words or date with in.
• Don't answer any question just click on the blue search button on the bottom left of the search box and all of your deleted emails will be revealed.

Windows Explorer has encountered a problem and needs to close.

Solution :

• Start ->Run
• type "regsvr32 /u vsfilter.dll" (without the quotes) press enter.
• Nothing happened except a message stating expired or something
• Go to start -> run and type - regsvr32 /u shmedia.dll click OK.

Unable to open or formate my Pendrive

Solution :

• Insert the pendrive
• Don't open or format it directly
• Right-click on my computer and go to manage
• Select disk managment option
• Right click on the removable disk
• Select format

Pen drive show empty even when data exists | All the data become shortcut file | .lnk file

Solution :

• "Start" type cmd and press "Enter".
• "Command Prompt" will be opened.
• Enter this command.
• attrib -h -r -s /s /d d:\*.*
• Here you can replace any drive name instead of  "d:\ "

MICRO SD card - Lost password

Solution :

• Go to file manager on your mobile
• In Settings choose system folders,
• In the System folder, find a file called mmcstore
• Send the file to your PC using IR/Bluetooth
• Open the file in Notepad
• The password you need for your memory card is located within that file

2nd Solution :

• Insert your card into your phone, without accessing it through the phone
• Run FExplorer and Open the path C:\system
• Find the file called mmcstore, and rename it mmcstore.txt
• Copy that file (mmcstore.txt) to your PC and open it in Notepad
• Your password will be located within that file.