Elo TouchSystems C-Series User Manual page 45

If using Windows 7 OS and your hard disk is corrupts, you can request a
NOTE:
Recovery DVD from TE Touch Solutions customer service.
The end user must adhere to Microsoft's Licensing Agreement.
NOTE:
After you recovered your touchcomputer by using the included image,
NOTE:
the operating system might reassign your USB Serial Ports during the
first bootup. You can follow the instructions below to reassign it
manually.
 Instructions to reassign the USB Serial Port
1. For Windows 7 OS, right click the "Computer"  Click "Properties" 
"Device Manager".
C-Series Touchcomputer for Healthcare Applications User Guide 30