怎样安装内存条?

这个问题一下说不清的，不过你不妨去这里读下，我觉得这个讲得很清楚了。（还有附图的说
http://img.gamespot.com/gamespot/images/2005/hardware/features/ramupgrade/ram_embed005.jpg）

Once you've purchased your RAM, it's time to install it. So, power down your computer, unplug it, and then open the case. You can usually find a few screws that will release the side panel, or a handle that you can pull. Make sure to ground yourself by touching an unpainted metal surface on your computer or the metal surface of the system power supply to discharge any static electricity before you handle the memory or start working inside the case.

With dual channel memory, install RAM into the same colored slots.

Locate the RAM slots on your motherboard (depending on how many slots you have, you might have to take out your old memory to make room). If you're removing old memory, simply push away the retention tabs on both sides of the RAM outward and gently remove the module.

When installing new memory, make sure the connector is lined up correctly with the memory socket before applying any pressure. Look at the slot and find the notch in the middle. Line your memory up with the notch (you may have to turn the module around), and then slide the module in between the retention tabs and push down firmly to lock the module in place. The downward pressure should force the retention tabs into place to ensure that the stick doesn't fall out. If you have a dual-channel setup, make sure to put RAM in the appropriately colored slot (in our case, we used both blue slots). Now close up your computer and boot up. Most computers will automatically recognize the extra memory without any further configuration.

直接插就行了。
可能会有兼容性问题，最好选速度一样的，有可能的话牌子最好也一样。插的时候插紧点，别到时候检不出来还得重插。

兼容性或内存本身问题