Method1: Use System Restore(windows xp) to create the restore point
- Open System Restore way 1. Start menu > Programs > Accessories > System Tools and then Click System Restore
- Open System Restore way 2. Click Start Menu, click Run, type %SystemRoot%\system32\restore\rstrui.exe, and then click OK.
- On Welcome to System Restore page, click Create a restore point, and then click Next .
- Enter name for the restore point and then click Create.
- After the restore point has been created, click Close.

1.1. On Windows Vista – Click Start, type systempropertiesprotection in the Start Search box, and then press ENTER.
1.2. Wait for Windows to search for available disks and most recent restore points. In the System Properties dialog box, on the System Protection tab, click Create, 
1.3. Type a name for the restore point and then click Create. 
1.4. After the restore point has been created successfully, click OK two times.

Method2:Export Registry

- Open Registry Editer Start Menu > Run and then type regedit
- Go to Menu File > Export..
- Select Export Location , Export range and Enter name , Click Save

Method3:Backup System Stage

- Use NTBACKUP Utility Backup System Stage Data
- Start Menu > Run and then type ntbackup
- Use Advanced Mode
- Click Backup Tab Check front System Stage
- Enter Backup Media or File name
- Click Start Backup

Begin Windows backup your files following;

• Open Run Dialog by Start > Run type ntbackup or
• Click Start, point to Accessories, point to System Tools, and then click Backup. If the Backup option does not appear on the System Tools menu.
• Now The Backup or Restore Wizard appears. Click Next.
• Select Back up files and setting, click Next.
• Select All information on this computer option
• Choose back up Media destination or Browse… on local computer, and enter name for backup and click next(Recommended External Hard disk).
• On the Completing the Backup or Restore Wizard page, click Finish.
• Now Windows Backup will saves a copy of your files. When the backup is complete, click Close.

you can restore your files when you completed the backup. However, any new files you have created and any changes you have made to existing files since the backup occurred will not be saved.

List of Popular backup software for windows below

Control Open Control Panel
access.cpl Open Accessibility Option
appwiz.cpl Open Add/Remove Program
bthprops.cpl Open Bluetooth Properties
desk.cpl Open Display Properties
and more..

to create shortcut control panel following step:

Right click on your desktop
New > Shortcut
Type
control.exe youraccess,System,2 in the “Command Line” input box
replace youraccess by control panel command (control panel command list here)
and click next
Enter Shortcut name and click finish

If you’ve received alerts warning and you would like to turn notifications off, you can disable the antivirus alert, firewall alert, or automatic update alerts.

To disable the windows security center service, use the following steps:

• click start run and type services.msc (Open service console dialog).
• find and Locate the Security Center entry in the list.
• right click and click Properties or Double-click Security Center and set it’s Startup type to Disabled.

If you wand to show only alert or two alert you can config windows security center

To Configuring the Security Center following this step:

• Open control panel by Windows key + r key and type control.exe.
• Open Security Center in list.
• Click “change the way Security center alert me”.
• check box alert setting you want to show and clik ok.

#1) remove startup program from start menu

•   go to start menu > program > startup
• right click icon you want remove from startup list and click delete

#2) disable startup from system configuration utility

• go to start munu > run type msconfig
• go to startup tab
• check on item you want disable from startup and then click apply
• reboot your computer

#3) remove startup program from windows registry

• Open registry editer go to start menu > run type regedit command
• Find this key on HKEY_LOCAL_MACHINE
• SOFTWARE\Microsoft\Windows\CurrentVersion\Run
• Delete list string value that you want remove from startup (may be check other key runonce,runonceex,runservices)
• restart your computer.

#4) You can ignore windows startup program by press SHIFT key during windows start.

How to open it?
Hibernate is the operating system function in both desktop and notebook.
It can be enable by following this step :

right-click on desktop then choose Properties – > Screen Saver – > Power and then click on Hibernate tab.

* If the Hibernate tab function is unavailable, your computer doesn’t support hibernate feature.
 
What’s happen if i use hipernate function?
Before shutting down harddisk operation, all information for example, program openning, document openning will be transferred from RAM to HardDisk then all operation will be shut down.
When you open your system again, all information will be recovery as same as before you are in standby mode. Please note that notebook which can use this function have to support Hibernate system as well.

However, if your disk drive is FAT32, you will be unable to recall this Hibernate function.

note :
If you enable hibernate function on your computer you must have harddisk space more than your memory because your computer will be reserve harddisk space for this function.

If  your windows XP  with Fast User Switching, the Shut Down menu will show the options to Stand By, Turn Off, or Restart your computer. You must hold down the Shift key, and the Stand By button will change to Hibernate.

Open command prompt by going to .. start > run > and type cmd

use command “net send”

Example:1
You want to send message “hello this is test msg from IT” to computer machine name “pc1″

follow this command
net send /DOMAIN:pc1 “hello this is test msg from IT” and press Enter

Example:2
You want to send same message to everyone on the network use this command

net send * “hello this is test msg from IT”

The message will be send to everyone

Remark

• You can send a message only to a name that is active on the network. If you send the message to a user name, that user must be logged on and running the Messenger service to receive the message.
• The Messenger service must be running for messages to be received. For more information about how to start a service