I hope your computer "gets well" soon.
You might want to consider using the Linux operating system. Viruses and spyware would be non-issues then.
For a great Linux operating system.
http://www.linuxmint.com/download.php but,
If your staying with windows, and it won't boot and is unusable, try going into windows safe mode and doing a system restore.
To get into safe mode hit the F8 key when the laptop is booting.
Pick Windows safe mode.
Then, when in the system restore window, pick a date before you got the virus.
Let it run through the restore process and reboot.
After the restore, install a good antivirus program like avast
http://www.avast.com/eng/download-avast-home.html .
When it asks you if you'd like to run a boot scan, say YES.
Restart your computer.
Avast will run a scan of your computer before Windows boots, it will clean out all the viruses. It may ask you if you'd like to delete when it detects the first instance of a virus, pick "Yes to all!"
After it's done, you are good to go.