PC Help!?

[Midnightclub]

Erm, just being observational, but you're going to clean up, update it and optimise it yet you don't know how to connect it to your router?

Exactly this! Tom don't go playing around with something 1) You have no idea about 2) Isn't yours..

Updating it will not make any difference in speed, get a new ethernet cable they only cost about £2. Download C Cleaner and Malware bytes and run them both that'll improve the speed a bit and get rid of any infections if there is any.