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.

Crack the WindowsXP Administrator Password

You can break the administrator password of windowsxp without formating your computer.


Follow the steps below to crack windowsxp administrator password.

* Insert your WindowsXP bootableCD in your cd/dvd drive.configure the BIOS to boot from cd . Restart the PC.

* You will see “Press any key to boot from CD……”,press any key from the key board.

* Then the Welcome to Setup screen will come, press ENTER to Setup Windows .
* Then press F8 to accept Licensing Agreement .
* In the next screen you will get a Repair option .so press “R”.
* Let the Repair run. Setup will now check your disks and then start copying files which can take several minutes.
* Shortly after the Copying Files stage, you will be required to restart.
* During the reboot, do not make the mistake of “pressing any key” to boot from the CD again! Setup will resume automatically with the standard billboard screens and you will notice Installing Windows is highlighted.
* Keep your eye on the lower left hand side of the screen and when you see the Installing Devices progress bar, press SHIFT + F10 when the progress bar timeing is 37 min.remaining This is the security hole!

Solve: NTLDR is missing, when starting windowsXP

What is NTLDR?
NTLDR is short for NT loader – A program loaded from the hard disk boot sector(first 512byte of hard disk) that displays the Microsoft Windows NT startup menu and helps Microsoft Windows NT load. So when it goes missing for some reason, your windows cannot load.

CAUSE: *Misconfiguration with the boot.ini file.
* Corrupt NTLDR and/or NTDETECT.COM file.
*Computer hard disk drive is not properly setup in BIOS.
*Computer is booting from a non-bootable source.
*New hard disk drive being added.
*Corrupt boot sector / master boot record.
*Loose or Faulty IDE/EIDE hard disk drive cable.
SOLUTION:
* first insert your bootable Windows XP installation CD into your CD/DVD drive,then restart your computer.

How to: Solve “ Missing Or Corrupt System32\hal.dll “

Note:You can apply this process in Microsoft WindowsNT,Windows2000,WindowsXP.

Symptoms: At the time of starting your computer you will get the following error message

*Windows could not start because the following file is missing or corrupt

\System32\hal.dll

*Windows_root\system32\hal.dll missing or corrupt.

  Please re_install a copy of the above file.