How Can I Fix Processes

Hi im looking to resolve and issue with my Dell inspiron which ive had for 1 year - which is as follows.

I currently have too many processes (apparently via my friends). Currently while on the internet my processes are around the 105-110 mark (this is with nothing but the internet running that i know of). This is an issue due to the fact is slows the speed of my laptop, and also significantly uses up and charges my internet bill.

What I would like to do is restore my laptop to factory setttings while also keeping the files I would like to keep such as videos/music/documents etc. The reason I feel this is the best option/I cant fix this problem manually is because I wouldnt wan't to uninstall anything unimportant off my laptop, and currently I have no idea whats important and whats causing high processes/HDD usage/Ram Usage - So I feel restoring to factory settings will get rid of the things i dont need, and reduce my processes dramatically.

I was hoping someone on this forum could give me a better method of fixing this problem before i decide im what im going to do, which at the moment is to put all my important video/audio/document files onto a USB/Disc, then restore my laptop and re install the things i need/install the files from the disc.

Thanks for reading/any help in advance.