Emachines D525 processor upgrade

I have an Emachines D525 laptop. I have the specs listed below. I need help because feel that it could run faster if it was given a better processor to run on. I would like to know what processors I could upgrade to. Thank you! :)

Processor: Intel Celeron CPU 900 @2.20 GHZ, 2194 Mhz
RAM: 3.00 GB
OS: Windows 7
BIOS: Phoenix Technologies LTD V1.16

Anything else needed, please let me know!
 
You can change your hd for ssd at least 100 GB . Buy a case for external HD, and use the original hd of her machine, as the same external hd . replace the memory of 1 GB for a 2 GB . Your D525 will be very fast.
 
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