You need to do some reading.
MS Imaging and Restore.When is the last time you backed up the drive to a MS image? Pay attention to what this does. You will lose data and programs from the date of last backup. If you have not backed it up, you will have nothing to restore.
If you want to fix this your self, I'd suggest downloading AVG, Avast, Adaware, SuperAntiSpyWare and MBam (Malware Bytes). I'd use MBam first. These all have free versions and are pretty good.
If you can't find the issue yourself, why not take it to a PC shop. If it is a virus copying files may just transfer it to a new drive. If it is not, the PC shop can replace the drive and recover files for you.