Burn the ISO-file onto a CD. Please make sure that you choose the option "Burn ISO image" or similar (depending on your burning software). Install the CD-ROM as the Primary Master device by plugging the CD-connection into the IDE slot. Change the BIOS to boot from the CD-ROM drive. Boot the system (the booting process may take several minutes).
If you get "No operating system found" error. It means:
The DOM is not as first on the BIOS boot sequence or you have inserted DOM wrong (i.e. com port instead of USB, or shift one pin) or mainboard USB port is dead.
If you are using a one-row cable to connect your DOM, and you've had an older module (the wide variety) replaced with a new one (the slim variety), please note the new slim modules use the lower set of pins, which is the opposite to the wide modules - you may have to modify your cable accordingly.