Easiest process in a multi-Vendor, multi-hardware environment is to pull the drive from the machine you need to recover, put the drive in an eSATA cage (on a good PC), recover the backup job to the eSATA drive, and return the drive to the original machine.
If you have another identical machine that has an Optical Drive, move the bad PC's hard drive to the machine with the optical (removing its drive), boot the SRD and do the Recovery.
One last thought, you may be able to create a bootable USB drive, and have it boot the SRD. I have not tried this, yet, but read the info here:
http://www.pendrivelinux.com/boot-multiple-iso-from-usb-multiboot-usb/
Hope any/all of these help in some way.
Dave T.