The first thing you should think about when upgrading Intel's Pentium III processor is your motherboard. Make certain that it can support a faster processor. Many older motherboards don't have BIOS (Basic Input Output System) support for today's processors and you may need to update your BIOS. If you want to upgrade to a Pentium 4 processor, also check the wattage of the power supply unit on your board, it should be at least 300W.
Instructions
1. Open your computer chassis Use a Phillips screwdriver to remove the screws from the cover. Then, slide the cover off of the chassis. Place the screws in a container, so you can easily find them later. Before you open your computer, wear an anti-ESD wrist strap to avoid damaging the components on the motherboard.
2. Unlatch the clamping mechanism for the fan/heatsink and lift it off of the Intel Pentium III processor. Use a flat-head screwdriver and insert it into the clamp to release it. Unplug the fan's power connector from the motherboard. Then, gently pull the fan/heatsink off of the processor.
3. Lift the processor lever up and remove the Intel Pentium III processor from the CPU socket. Examine the CPU socket for any dust buildup. Use a can of compressed air to remove any debris.
4. Inspect the new processor after removing it from the antistatic bag. Check to see that the pins are aligned and not bent. Reuse the antistatic bag and place the old Intel Pentium III processor inside.
5. Place the new processor into the CPU socket. Make certain that the pins line up with the holes in the socket. Then, pull the processor's lever down to lock it into place.
6. Remount the fan/heatsink on top of the new processor. Use the flat-head screwdriver to push the locking mechanism down to secure it. Plug the fan's power connector back onto the motherboard.
7. Replace the cover on the chassis and reinsert the screws that you removed. Insert your computer's power cords into an electrical outlet.
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