My new RAM won't work!
Before we get into answering specific questions, have a look at these general troubleshooting tips. It's best to start out with the simplest solution; we'll get into instructions for specific problems later on.
Certain characteristics of the memory module, such as speed, size, error checking, type, and so on, can make the difference between whether your computer accepts or rejects the installation. Check the product package and take a close look at the memory you bought. Make sure it meets your computer's requirements. If you're having problems, you may have simply selected the wrong type of RAM for your system.
Double-check the installation of the memory modules. They only go in one way, so make sure that the modules are inserted completely and are latched into place on the motherboard.
Check the manual that came with your motherboard or system to make sure you've followed all the recommendations and specific installation procedures. Some systems require that memory either be inserted in a particular order among the sockets, in pairs of modules, or that a jumper on your motherboard be set for the RAM to function properly.
Check your BIOS. You may need to make changes to the CMOS Setup so that the new memory can function properly. Even if you don't make any specific changes, save the settings anyway when you exit the CMOS Setup.
Finally, the memory may be defective. Try the memory in another compatible PC (if possible) to see if it works. Otherwise, return the memory for replacement.
