How to set BIOS password in your Computer

BIOS is the first program that is run when computer starts. You can tell the BIOS to ask for a password when it starts, thus restricting access to your computer. You can make your computer to ask for a password without installing anything.
I am going to outline step by step the procedure for setting password to your BIOS or sometimes called CMOS

Step1: Turn On or reboot your computer.

Step2: Star pressing “f1+f2+Delete” key from the key board immediately after turn on. Because to enter BIOS setup you need to press F1 or F2 or DELETE. So press all the options at a time.

Step3: you'll see a menu screen something like this: Go to the security option.

Step4: You will find there are two options that relate to passwords, Supervisor Password and User Password, these relate to controlling access to the BIOS Setup Program and the Machine Boot respectively.

NOTE: Not all the BIOS have the password feature. If your BIOS has not this feature then you cann’t set password to your BIOS . But now-a-days most of all computer have this feature.

Disable 'turn Off System Restore' In Windows Xp

Windows XP system Restore feature enable user to restore the computer to a earlier time. you have to create a restore point. By following the below steps you can stop this feature of windows xp temporarily

*Log into your computer with administrative privileges.

*Go to Start --> Run. The Run window will open.

*Type "cmd.exe" in the Run window. This will open a command prompt. *At the command prompt, type "net stop System Restore Services".

*You should see a message saying that the System Restore Services process has been stopped. For more information about system restore visit the link here.

How to Create a Limited account on Windows XP

If you frequently allow other user to access your computer, your computer is not safe because there is a chance of installing junk, stumbling upon search history etc. So by creating a Limited Privilege user account ,you can prevent this.

Here is what the Limited user account will prevent

1. limited users cannot download and install programs.
2. limited users cannot change system settings.
3. limited user cannot delete any files except their own.
4. limited user accounts cannot access other users files.
Here is the step by step the procedure for making a Limited Privilege account on Windows XP.

Step 1
Go to the task bar and Click Start.

Switch Mode Power Supply (SMPS) Testing

SMPS IS Switch Mode Power Supply. The primary function of SMPS is to convert the alternating current (AC) power available in homes into direct current (DC) required for a computer system. In desktop computers, you will find a metal box in the corner of the CPU case supplies power to various components in the CPU box. The power supply converts 115-230 volt AC into DC that is required for computer components to work.
AC stands for alternating current. It is an electric current whose magnitude and direction vary cyclically.
DC stands for direct current. It is considered as the constant flow of electrons in a single direction from low to high potential. Computers use DC power. Because of the advantage of alternating current over direct current in transforming and transmission.