1. Know the indications of a corrupt RAM for replacing it. The major signs of bad RAM are long beeps, blue screen or random crashes when you run programs such as Photoshop or games.
2. Run the memory test software to determine if RAM is corrupt. You can easily download this software online.
3. Remember that if you have multiple memory sticks you need to run the memory test software individually for each stick.
4. Verify the type of existing RAM. Depending on the type of RAM, you will need to install either SIMM (single in-line memory module) or DIMM (dual in-line memory module) chips. You may have a single 1 GB chip or a pair of 512 MB chips.
5.Learn more about different types of RAM and notice differences between them in speed and parity. The most common types are SDRAM (Synchronous Dynamic RAM) and RDRAM (Rambus Dynamic RAM). Pentiums and Celerons have SDRAM installed in the CPU. Newer machines have DDR (Double-Data-Rate) and RDRAM.
6. Become familiar with the installation process. First switch off your computer and shut down the power completely, if it is on. Disconnect all cables originating from and to the CPU carefully.
7. Open your computer case by using a phillips screwdriver.
8. Understand your motherboard. Locate the RAM socket, video card, hard drive and the processor box before you begin the installation process.
9. Examine the RAM socket (memory slots) and clean any dirt before inserting the RAM chip. Never use a cloth or liquid spray to clean. Carefully use a vacuum cleaner instead.
10. Open the RAM socket latch. The latch will often be secured with the clips to hold the RAM chip in place. Open all the clips. Your computer may have a 72-pin or 164-pin RAM socket, depending on the year of manufacture.
11. Place the chips securely in the latch and re-clip it. You should hear a "snap" sound that indicates proper locking.
12. Test the RAM installation. Put the covers on but do not screw the case closed. Reconnect all cables and switch on your computer. Look for BIOS (Basic Input/Output System) by pressing F2 or F8 on startup. Navigate the menu to locate RAM memory and make sure that the RAM you installed is detected.
13. Reboot your computer. Use My Computer to authenticate the newly installed RAM. Put all the screws back to the original position. Your computer should now run smoother and faster with more RAM.