After poisoning with a key to restore useful?

Users questions:I use the Lenovo is now in a Trojan virus, can not kill, a key to recovery is not equivalent to reinstall the system? Prior to first use is to format the c drive?
Experts answer: can be understandable, but if the virus were infected with other divisions, a key to restore the system can be restored if they can have, if only to restore theC drive out the virus is not able to completely mesh.
  • This information provided by the users.Thanks!