How to Create a Computer Virus?

How to Create a Computer Virus?

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NOKIA Mobile Secret Codes

On the main screen type in:
*#06# for checking the IMEI (International Mobile Equipment Identity).
*#7780# reset to factory settings.
*#67705646# This will clear the LCD display(operator logo).
*#0000# To view software version.
*#2820# Bluetooth device address.
*#746025625# Sim clock allowed status.
#pw+1234567890+1# Shows if sim have restrictions.
*#92702689# - takes you to a secret menu where you may find some of the information below:
1. Displays Serial Number.
2. Displays the Month and Year of Manufacture
3. Displays (if there) the date where the phone was purchased (MMYY)
4. Displays the date of the last repair - if found (0000)
5. Shows life timer of phone (time passes since last start)
*#3370# - Enhanced Full Rate Codec (EFR) activation. Increase signal strength, better signal reception. It also help if u want to use GPRS and the service is not responding or too slow. Phone battery will drain faster though.
*#3370* - (EFR) deactivation. Phone will automatically restart. Increase battery life by 30% because phone receives less signal from network.
*#4720# - Half Rate Codec activation.
*#4720* - Half Rate Codec deactivation. The phone will automatically restart
If you forgot wallet code for Nokia S60 phone, use this code reset: *#7370925538#
Note, your data in the wallet will be erased. Phone will ask you the lock code. Default lock code is: 12345
Press *#3925538# to delete the contents and code of wallet.
Unlock service provider: Insert sim, turn phone on and press vol up(arrow keys) for 3 seconds, should say pin code. Press C,then press * message should flash, press * again and 04*pin*pin*pin# \
*#7328748263373738# resets security code.
Default security code is 12345
Change closed caller group (settings >security settings>user groups) to 00000 and ure phone will sound the message tone when you are near a radar speed trap. Setting it to 500 will cause your phone 2 set off security alarms at shop exits, gr8 for practical jokes! (works with some of the Nokia phones.) Press and hold "0" on the main screen to open wap browser.

Thanks.

How-to Shutdown Windows Vista at a Specified Time

I’m going to use the shutdown command included in Windows Vista to shutdown the computer and the task scheduler to shut it down at a specific time.
1. Open Task Scheduler by going to Start orb, All Programs, Accessories, System Tools, and then open Task Scheduler.
2. Click Create basic task on the right side of the Task Scheduler.
3. Give the task a name and then click Next.

4. Select when you want to shutdown the computer and then click Next. The next screen will differ depending on when you want the computer to shutdown. In this example I want the computer to shutdown every Monday – Friday at 6pm.
5. Next, choose the rest of the details about when you want to shutdown the computer and then click Next.
6. Choose to Start a program and then click Next.
7. Type shutdown under Program/script and type –s –f –t 0 in the Add arguments box and then click Next.
8. Click Finish on the next screen to save this scheduled task.

How to Install Window XP Professional

1. Ensure that your computer meets or exceeds the minimum system requirements to run Windows XP:
   
   
   • 300 Mhz Intel or AMD CPU
   • 128 Megabytes of system RAM (It can work with 64 Megabytes of RAM but its not recommended)
   • 1.5 Gigabytes of available drive space
   • Super VGA 800x600 Display Adapter
   • CD or DVD-ROM
   • Keyboard and mouse, or other pointing devices
   • Network Interface Adapter required for Internet and Network Connectivity
2. Ensure you have a Windows XP Product Key. It is printed on a sticker on your software package. It is a string of 5 groups of characters (each 5 long), separated by dashes, resulting in 25 characters in all.
   
   It looks like this: HHHCF-WCF9P-M3YCC-RXDXH-FC3C6.
   
   When the software has almost finished installing, you will be asked for it.You need the product key to complete installing Windows.
3. Before inserting the CD, you'll have to enter bios (in most cases by presing DEL on system startup) and select your primary boot device CDrom. Insert the Windows XP Installation Disc and start your computer. When prompted to "Press any key to boot from CD," press a key on the keyboard.
4. The installation program will check your hardware, install default-set drivers, and load files necessary for installation. When arriving at the "Welcome to Setup" screen, Press ENTER to begin the installation process.
5. Read the License Agreement, and press F8 indicating you agree to its terms.
6. On the next screen, you are presented with a summary of the available partitions on your installed hard drives. At this point, you should see only one entry, "Unpartitioned Space." It will be highlighted in grey. Press C on your keyboard to begin creating partitions for the drive.
7. Enter the size in megabytes for the new partition. If you intend to install only one drive, enter the maximum amount shown. If you wish to create multiple partitions on a single drive, remember that Windows XP requires at least 1.5 Gigabytes of space, plus swap space, and areas for temporary files. A good rule of thumb is not to install Windows XP on a partition less than 5 Gigabytes, unless you wish to impact performance. When calculating, remember that there are 1,024 Megabytes per Gigabyte. Press ENTER once you have chosen your desired partition size.
8. The system will create your new partition, and you will now be at the partition summary screen once again. Select your new partition, usually labeled "C: Partition 1 [Raw]" and press ENTER.
9. Select either "Format the Partition using the NTFS File System" OR "Format the Partition using the FAT File System," and press ENTER. NTFS is the preferred method, supporting a larger amount of disk space per partition than FAT, and including security features at the file system level. NTFS also includes system level compression. If your partition is larger than 32 Gigabytes, you must choose NTFS. However, with a partition less than 32 Gigabytes, you can choose FAT, and convert to NTFS later should you desire. Be aware that NTFS cannot be converted back to FAT.
   
   It is highly recommended to avoid Quick Format, as this skips an important process that checks the hard drive for errors or bad sectors. This scan is what consumes the majority of the time taken when performing a full format. If there are errors on a disk at the physical level, it's best to catch them now rather than later.
10. The system will now format the partition. The length of time this process requires depends on the speed and size of the drive, and the type of file system you selected earlier. In most cases, the larger the partition, the longer the process will take.
11. Windows will now start copying files from the installation disc and prompt you to reboot the computer when the process is completed. Press ENTER when prompted to reboot, otherwise it will do so automatically after 15 seconds.
12. This is the most time consuming part. When the computer reboots, do not press enter to boot from the disc this time, rather allow the computer to boot from the hard drive. If you are greeted with the Windows XP Boot screen, all is well so far.
13. Now the setup program will display various marketing information to you as it installs and configures itself to your system. The estimated time remaining is displayed in the lower left corner.
    
    Note: it is normal for the screen to flicker, turn on and off, or resize during this process.
14. Sooner or later, a dialog window will appear, asking you to choose your Regional settings. Select appropriate settings native to your area. Click the "Next" button when that is completed.
15. Enter your Product Key, (otherwise known as a CD or Install Key,) at this window. You will not be able to complete this process without a valid Key. Click "Next" to continue.
16. If your computer is going to be on a LAN (Local Area Network) at home, or even just for kicks, give it a name.
17. Select your time zone, and ensure that the date/time are correct. Click "Next" to continue.
18. Leave "Typical Settings" selected for Network Setup, unless you have a specialized access device or protocol required. Refer to the documentation for that device for installation procedures.
19. Setup will continue to install other devices and peripherals connected to your machine, give you marketing and capability information, then reboot as before.
20. Congratulations! You've installed Windows XP. There are a few more additional set-up routines required, but you have completed the installation. Remove the CD from the drive.
21. Upon Reboot, click Yes when you are informed Windows will be changing your visual settings to improve quality.
22. In the next box, if you can read the text, press the "OK" button.
23. A similar screen to Part 2 of the install process will appear. If your computer is connected to the internet, select your connection type. Press Next to continue.
24. If connected to the Internet, Select "Activate Now."
25. After the Activation Process, a window will appear allowing you to select the users for the computer. Enter your name, and the names of others who will be using the machine. Press Next to continue.
26. You will now be looking at the default Windows XP Desktop. Congratulations!

DXDIAG:- DirectX Diagnostic Tool

The DirectX Diagnostic Tool is designed to help you troubleshoot DirectX-related issues.

The default installation folder for Dxdiag.exe for Microsoft Windows 2000 and Microsoft Windows XP is:
C:\Windows\System32
To start the DirectX Diagnostic Tool, click Start, click Run, type dxdiag in the Open box, and then click OK.

The following list contains a description of each tab in the DirectX Diagnostic Tool dialog box.
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System
The System tab provides system information about your computer and specifies the version of DirectX that is installed on your computer.
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DirectX Files
The DirectX Files tab lists the file name and the version number for each DirectX file that is installed on your computer, as well as the file name and the version number of many common files that are used by games that are running under DirectX.

If the DirectX Diagnostic Tool detects a problem with a DirectX file, a warning message appears in the Notes box.
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Display'N'
('N' is the number of the physical display device.)

The Display tab lists your current display settings, and allows you to disable DirectDraw, Direct3D, and AGP Texture Acceleration. This tab also allows testing of DirectDraw and Direct3D. Passing these tests indicates that the DirectX Graphics runtime files are installed and operating correctly. It is not a comprehensive test of your computer's display hardware.

The Display tab also lists your device's available memory and can tell you if your video driver has passed Microsoft's Windows Hardware Quality Labs (WHQL) testing regimen by checking whether the WHQL Logo'd is set to Yes or No.

Note Dxdiag.exe cannot report memory that is in use at the time that it starts. Therefore, it is not uncommon to see less memory reported than your video card actually has.

If the DirectX Diagnostic Tool detects a problem with your display settings, a warning message appears in the Notes box.
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Sound
The Sound tab displays your current sound settings, and enables you to test DirectSound. The Sound tab can tell you if your audio driver is "Signed" - which indicates that it has passed Microsoft's Windows Hardware Quality Labs testing regimen.

The Hardware Sound Acceleration Level slider is used to correct audio glitches that might be caused by some audio drivers. Reducing the acceleration by one notch and re-testing the application is the best way to troubleshoot DirectSound audio problems. Lowering the Hardware Sound Acceleration Level from the default setting of "full acceleration" may disable advanced audio processing techniques, such as 3D spatialization from functioning.

If the DirectX Diagnostic Tool detects a problem with your sound settings, a warning message is displayed in the Notes box.
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Music
The Music tab displays your current MIDI settings, and enables you to test the DirectMusic component of DirectX.

If the DirectX Diagnostic Tool detects a problem with DirectMusic, a warning message is displayed in the Notes box.

Note DirectMusic is a new component included in DirectX 6.1.
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Input
The Input tab lists the input devices connected to your computer and the input drivers installed on your computer.

If the DirectX Diagnostic Tool detects a problem with an input device or an input device driver, a warning message is displayed in the Notes box.
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Network
The Network tab lists the registered DirectPlay Service Providers. These are the connection methods that DirectPlay will operate across. A registry problem here can normally be resolved by reinstalling DirectX.

The Registered Lobyable DirectPlay Applications section lists all applications that have informed DirectX that they will use DirectPlay for their network communication needs. A registry error here can normally be resolved by removing and reinstalling that application.

The DirectPlay test opens a chat window over DirectPlay using the settings you specify. Systems that cannot successfully chat with one another here will almost certainly be unable to establish a network connection within games.

If the DirectX Diagnostic Tool detects a problem with a DirectPlay Service Provider or Application, a warning message is displayed in the Notes box.
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More Help
If you cannot resolve your DirectX issue by using the previous troubleshooting tabs, you can use the More Help tab to continue troubleshooting the issue.

The following list contains a description of the functionality of each button on the More Help tab:

* Troubleshoot
The Troubleshoot button starts a DirectX troubleshooter.
* Sound
The Sound button starts a sound troubleshooter.
* MSInfo
The MSInfo button starts Msinfo32.exe, a utility that gathers system information about your computer. The file created by Msinfo32.exe can be sent to Microsoft Technical Support to help resolve persistent issues.
* Override
The Override button changes the DirectDraw refresh rate.

Note Microsoft does not recommend changing the DirectDraw refresh rate as a general troubleshooting step.

How to create user in DOS

Use this command in DOS to create a new user:-

   net user username password /add

use this commamd to delete a existing user:-
   net user username /del