Computer Woes?

Okay. At the start up after i selected my user account and whatever a blue screen comes up, and in the middle a box say "Spy-ware Detected on your computer. Install an antivirus or spy-ware remover." Now I've tried like hell to take off this spy-ware, its tiresome now. So I've decided to reload my pc, now when I'm creating back up disks, no program can run, not even Nero. So when I'm copying-paste, error files cannot be copied. WTF!!! Someone, help me. Please