Int 10 Fn 7F04  - Sollex Supervga - Power Control - Set Power State        [V]

   AX = 7F04h
   BL = 00h
   CX = new power state

Return: AL <> 7Fh if not supported
   AL = 7Fh if supported
       AH = status
       00h successful
       01h failed

Note:  higher values progressively reduce the operations available on the
     video adapter while yielding increasing power savings

See Also: AX=7F00h"SOLLEX",AX=7F04h/BL=01h