SSD, even a SATA one would be a huge speed boost for general use. A fresh install of Windows would also be your best option to wipe the slate clean.
Seems there are both Intel and AMD versions of it, go here and type in your serial number, what do you see under BIOS? https://www.acer.com/gb-en/support/product-support/N50-110/downloads
Seems there are both Intel and AMD versions of it, go here and type in your serial number, what do you see under BIOS? https://www.acer.com/gb-en/support/product-support/N50-110/downloads