Random Access Memory, or RAM , is a way for your computer to store temporary data, rather than in a cache or permanent storage. Storage, often wrongly referred to as memory, is permanent data stored on a hard drive or solid state drive. A CPU cache is a small amount of often-needed memory that is stored on a CPU chip. Both the RAM and CPU cache are temporary data stores that are cleared when your computer is turned off.
One way to think of the difference between these different types of storage is to imagine them as paper documents. The cache is a list of names or numbers you constantly refer to and keep close at hand. A folder full of papers you may need for your current task is similar to computer memory or RAM. The file cabinet full of folders for all your projects is like the storage on your hard drive.
Memory problems are less common than other computer problems because memory sticks have no moving parts and thus fewer points of failure. However, due to this many RAM problems go undiagnosed. Memory usually will last longer than other computer components so manufacturers offer longer warranties for it than other parts. If you buy brand name memory it will likely have a lifetime warranty.
Symptoms of a RAM Problem
When you first turn on your computer it runs fine, but as you go about your business you notice that its performance diminishes. By lunch time, websites take minutes to load and local programs run at a snail's pace. This type of gradual deterioration of PC performance, especially with memory-intensive programs, may be caused by a RAM problem.
Your computer randomly restarts while you are in the middle of something or freeze sporadically. It may also reboot almost immediately upon opening the desktop. This could be a sign of faulty RAM.
A blue screen with white text flashes before restarting. Blue-screen errors are annoying because you don't even have a chance to read the error message. Bad RAM is one thing that cause them.
Files—particularly ones you frequently access and save—seem to be inexplicably corrupted. RAM issues can lead to this problem, which can worsen over time. The file structure of your hard drive may slowly degenerate and you will no longer be able to boot your machine.
Your attempts to install a new program repeatedly fail for unknown reasons. You try to reinstall the operating system, but keep getting odd error messages.
There are certainly a variety of problems that could cause the issues above, but faulty RAM is an often-overlooked root cause of inexplicable issues. If you have one or a combination of the above problems you are likely facing a memory issue.
What Causes Memory Damage?
Power surges can damage most computer components, including RAM. You should plug your computer and other expensive electronics into a surge protector. Make sure you know the difference between a surge protector and a power strip.
Before you handle any parts in your computer, make sure you ground yourself by touching a piece of grounded metal to discharge static electricity. Electrostatic discharge can damage your computer.
Excessive heat can cause RAM and other parts to wear out over time. Individual components can overheat, or heat from one component can cause damage to adjacent parts.
If you have overclocked any part of your computer incorrectly, it may cause damage in the form of excess heat.
Your memory module may have some fault that passed through quality control and worsened over time. This is the most likely cause behind a damaged RAM.
It is also possible that the memory module is fine, but one or more memory slots on your motherboard are defective, hindering the RAM's performance. The defect may even be so bad that it damages the memory stick.
Fixing the Problem by Removing Memory
To remove a RAM module you need to press the tiny levers on each end to release it.
Test each of your memory modules one at a time to find which ones are bad.
When you find the sticks that are bad you can order replacements. It is possible all the memory modules are damaged if your computer experienced a serious power surge.
If all the memory modules appear bad, then the problem is likely with the memory slot itself. Try testing each memory module in each of the memory slots to find if one of the slots is faulty.
To fix a faulty slot you would need to replace your motherboard.
When replacing a module, make sure the indention on the bottom is lined up correctly with the slot and then press it in until you hear the levers snap. Note that some levers do not make a snapping sound.