Need Helps for FS2000

[Le Québécois]

I've a problem with Flight Simulator 2000 on my grand father computer. The game load but when it's supposed to run...the computer reboot.
The computer:
Duron 600
Gygabit mother board( I don't know the name but the video and sound are part of the mobo )
Nvidia Vanta 32 mbs
SB 32 awe
64mbs SDRAM
Win 98