Compaq AlphaServer DS10 Reference Manual page 149

If Windows NT was installed at the factory, Windows NT setup will start
automatically the first time the system powers up.
NOTE: Steps 1 and 2 in the following procedure are necessary only when you
are first setting up your system. On subsequent installations and
upgrades, begin at step 3.
1. Use CMOS Setup to set the system date and time: start AlphaBIOS
Setup, select CMOS Setup, and press Enter.
2. Perform an express hard disk setup: return to the main AlphaBIOS Setup
screen, select Hard Disk Setup, and press Enter.
3. Put the Windows NT CD into the CD-ROM drive.
4. Start AlphaBIOS Setup, select Install Windows NT, and press Enter.
Follow the prompts to complete the installation. For more information on
installing Windows NT, refer to the Installation Guide in your Windows NT
software package.
AlphaBIOS Console 3-33