Luckily, all Inspiron models can also be easily updated with new RAM modules.
Use the steps below to help you figure out how to install new RAM sticks in your laptop. This is the most important step, as there are a lot of different Inspiron models, and they all use slightly different RAM.
Since it's a caveman computer, then you better know there are some downsides along with upgrading it to Windows 10, but first let's list your current system configuration.
Current System Configuration: Processor: Intel® Core™ 2 Duo CPU @ 2.26GHz RAMs: 2GB DDR2 SDRAM(667/800-MHz).
Personally I would make the upgrade even though it could be a little complex and long winded.