Using the Recovery CD Installing Retail Windows NT 4.0 To disable automatic CD-ROM detection Windows NT automatically detects a CD when you insert it. However, this prevents the OmniBook from automatically turning off after a period of inactivity if the CD-ROM drive is installed. You can disable this feature with the following procedure. 1. From Start Menu, click Run. 2. Enter REGEDT32, then click OK. 3. Select the HKEY_LOCAL_MACHINE window and go to System\CurrentControlSet\Services\Cdrom 4. Double click Autorun. 5. Enter 0 and click OK. 6. Close the Registry Editor and restart Windows NT 4.0. 6-22