Cannot restore image

I saved my whole disk into an image, but, when trying to restore it tells me to reboot, so i reboot and the process starts, but before the backup loads I get error 46. What can i do to restore the image from my backup?

Hi

Is the backup image stored on an external hard drive? Some external hard disks are not “visible” at Windows startup.
If you need specific files & folders you can mount the image.
Otherwise you need to move the backup file on a drive (on other hdd than the one which will be restored)
or you can follow the userguide steps to create a bartPE / winPE rescue disk and make sure that you run CBU.exe from other location than the destination of the restore process. Comodo Help

Thanks