How to restore.

First simple way go to browser type in "how to restore windows system restore to your specific computer" Second Run a full system back up on an ext HDD and record a boot disk for your system. Then go to your system restore in your security. and hit start run all programs and restore to original places or folders.. Good luck the second worked for me and my son got his vanished system restore back and up and runnig by going into the BIOS but if your not a fairly pro ET get a friend to help. Can get complicated.