Computer Repair Software

If you’ve been following the advice here and you’ve determined that all previous computer repair software, advice, techniques and antivirus software have not fixed your infected computer, it’s time to bite the bullet and reinstall the OS on a clean hard drive.

But first you need to save the documents, pictures, music for each user. Whether you use an external hard drive, flash/thumb drive, CD/DVD or online backup – take the time to learn to do this right. You won’t get a second chance once you wipe the hard drive clean.

When you’ve got that done, come back to this page and you’ll start the repair.

To start with a bare hard drive, you can either buy a new one or clean the one you’re using.

Doesn’t formatting the hard drive, clean it?

No. Formatting simply creates the partition(s) and file space to be used. Formatting leaves the master boot record (MBR) in place, a favorite hiding place for most malware (about 80% of infections we repair have MBR rookit). In order to remove all traces of the previous data, write zeros to every byte of the hard drive. (fdisk /mbr only copies the backup MBR to the boot sector – hackers figured this one out too.)

There are many good hard drive erasers on the internet that can zero-fill hard drives. Many of them run in Windows. You install the software and point it to the drive attached.

But, for me, the drive is still toxic and simply plugging it in to a Windows system is dangerous.

Recommended solution – boot the computer from a CD. Either a bootable CD that autoruns the software (KillDisk) or loads a flavor of Linux to run the disk utilities available in that particular distribution (another topic, another day).

My favorite, for a long time, has been KillDisk from Lsoft Technologies. Download the .iso and create a bootable CD.

Clean Start

Take a deep breath, there’s nothing to lose (you did your backups and have your installation CDs and license keys, right?) and if goes wrong, you can do it over again.

Boot the computer to the CD you created to start Killdisk. Killdisk will show all drives and partitions detected. Make sure you know what hard drive you’re wiping. Best to have only the CD and the HD to be cleaned connected.

If you’re computer has a media card reader, disconnect it to avoid confusion and prevent Windows from seeing them as drives during installation.

Follow the prompts to begin the process. The bigger the hard drive, the longer it will take.

Killdisk

 

Done?

Congratulations. You now have a clean system.