How swipe my entire pc clean?

I got a spyware on my PC which is diguising itself as a virus protection and I just want to clean out the whole PC because I’ve tried to configure it and it won’t delete off my programs. PLEASE I beg you HELP!

In my approximately 30G C: Drive, the Program Files and Windows folders pretty much take up the entire drive, leaving me with only 896MB available. I have an additional 240G drive with plenty of space, but my computer stills runs slow because of the C: drive issue. Is there a way to clean up the C: drive or possibly transfer the folders in question to my other drive? Please help…

I’m talking about hardware.

besides deleting cookies , files and using disk clean up
what else can be done?

I just got a laptop and they forgot to install some drivers but I don’t know which ones. I know that they aren’t there because my computer is running funny and I fixed a few. Are there any programs that can scan and tell me what I’m missing?