RAM is not recognized - this may be the result

If you have bought and installed new RAM, in some cases this is not recognized directly. We'll show you how to solve the problem.

What memory is compatible with my computer?

There are DDR, DDR2 and DDR3 working memories. If your computer is from 2008 or newer, it is very likely that DDR3 RAM is required.
In the mainboard manual you will find out which type of RAM is accepted. You can download manuals from the manufacturer's website.
The free tool CPU-Z tells you which type of RAM is installed. Simply switch to the "Memory" tab at the top of the tool.

If you use a 32-bit system from Windows, you can use a maximum of 4 GB of RAM. If you want to install more RAM, you need a 64-bit system.
Open the Control Panel and select the "System" under the "System and Security" category. In the line "Installed RAM (RAM)" you will find the installed RAM.
If this does not match the newly installed RAM, read on in the next paragraph. Note: The usable working memory is always a few hundred MByte less than the installed one.

If the RAM is not set up correctly when it is first detected, you must set up the modules step by step:

Turn off your computer and remove all RAM modules. Blow once in the slots to remove dust. You can clean the contacts of the working memory with a microfiber cloth.
Now insert a module and start your computer. As in the paragraph above in the Control Panel, check whether the memory has been recognized.
Switch the computer off again, remove the RAM module and check all other modules in the same way.
If all modules are in order, insert the first module again, start the PC and check the acceptance. You can then install another module after each start.