Without knowing the actual specs of your PC, it's pretty impossible to be able to suggest upgrades, however, based on the fact that it is a year old, I'll assume that it's pretty lame. I'd say your best bet is to honestly just build a new PC with some nearly-current components for $550-650 unless you just cannot afford that. I can help you pick out the best value parts for that, but I can't really suggest any upgrades without knowing what you have first ;<
Upgrading your CPU requires me to know both if it's AMD or Intel and what socket it is. Upgrading your GPU really isn't going to make that huge of a difference if the rest of your PC can barely stomach word processing.
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