There are few parts of a desktop computer that can be more frustrating than the amount of random access memory, or RAM. Many of the older PC models were manufactured with a minimal operational memory module. The registry in a new computer is new and operates very smoothly when first connected. A minimum RAM module does very well for the novice user.

Over a period of time the registry can become corrupted by malicious files or incomplete program removals, making the computer operate slowly or not at all. Those types of errors can be repaired with software. But, the low RAM level or a bad module can only be repaired by replacement. Replacing the module can be a simple task, but it is important to follow a few rules.

Access the specifications of the model. All computer manufacturers have official websites that list the specs on all components of its products. There are numerous websites with the information, but the actual maker is probably the most reliable. Locate the manufacturer and model number on the computer. Then go to the manufacturer's website. There should a product search box on the page. The search will produce a specification page.

In the memory section of the specifications page will be an information table explaining the type of RAM the unit uses, along with RAM capacity. Pay close attention to the modules operating speed. In older model computers, Windows can only see 2 gigabytes, but newer common models use up to 8 gigabytes generally.

The page will also indicate the type of module seat in the computer. An internal diagram can also be found on the website and will show where the RAM slots are located. They are normally easy to access because the computers were made with upgrading and repair in mind. It is also important to disconnect everything from the computer and lay it sideways to remove the access cover.

Memory modules are held in place by plastic clips that can easily be slipped back to allow the old module to come out. When replacing the module it is important to hold the computer chassis with one hand to avoid static electricity charges and use the other hand to set the module in the slot. The pin design will fit perfectly in the slot or the plastic retainer clips will not re-snap.

After seating the module properly, gently and firmly push down on one end of the module until the clip snaps in place. Then do the same thing to the other end of the module. Be sure not to force the module when it appears that the pin designs are not matching. With both plastic retainers snapped in place, attempt to wiggle the module to make sure the connection is true.