If you are using a memory stick as an alternative method of installing Windows XP, the process to go about is different than installing XP through a regular installation CD. Memory stick devices offer portability and durability and can be connected to any computer directly or through a memory card reader. Unlike CDs or DVDs, memory sticks do not suffer from potential data loss due to physical degradation over a long period of time.
Connect the memory stick to a memory stick slot on your computer. If your computer does not have a memory stick slot, obtain a memory card reader and plug the card reader into an available USB port.
Power on your computer. Depending on your computer, press the "ESC," F2" or "F10" key on your keyboard to access the BIOS option when prompted.
Wait for the computer to detect your memory stick, and once the computer recognises your memory stick, select it as the primary boot disk for installing XP.
Press the "Esc" button to exit BIOS and resume with normal boot-up.
Click on the "My Computer" icon on your desktop.
Find the memory stick drive, and double-click to open the browser window.
Find your Windows XP installation file, and double-click to begin the installation process.
Follow the on-screen instructions for installation.
Restart your computer once the process is complete to finish installation of your Windows XP.