Dell Inspiron 1440 (Mid 2009) - Manual (Page 30)

2. Slide the memory module firmly into the slot at a 45-degree angle, and press the memory module down until it clicks into place. If you do not hear the
click, remove the memory module and reinstall it.
3. Replace the module cover (see Replacing the Module Cover ).
4. Replace the battery (see Replacing the Battery ), or connect the AC adapter to your computer and an electrical outlet.
5. Turn on the computer.
As the computer boots, it detects the memory module(s) and automatically updates the system configuration information.
To confirm the amount of memory installed in the computer, click Start ® Help and Support® Dell System Information.
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NOTE: If the memory module is not installed properly, the computer may not boot.
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