I would suggest you to follow these steps to increase the memory and check if it helps:
a. Press Windows key + R on the keyboard.
b. Type “msconfig” without quotes and press
c. Under Boot tab, click on
d. Uncheck the option Maximum memory and click on
e. Click OK again and restart the computer.
f. Check if it helps resolve the issue.
I would suggest you to refer to the link and run the Memory Diagnostics Tool:
Diagnosing memory problems on your computer
You may also refer to the article for details regarding less RAM (Random Access Memory) usage:
The 3GB-not-4GB RAM problem
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